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CVE-2026-92707ModerateDisclosedDoSNetworkRevised 15 Oct

MessagePack-CSharp Denial of Service Vulnerability

MSRC advisory NVD CVE.org

Assessment

Improperly controlled sequential memory allocation in .NET allows an unauthorized attacker to deny service over a network.

Severity
Moderate
CVSS base score
5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Impact
Denial of Service
EPSS · 30-day forecast
No EPSS score collected
Public detection template
No Nuclei template is listed in the current collected catalog
Exploitation detected
No known exploitation (MSRC assessment)
Exploitability
Exploitation Less Likely
Publicly disclosed
Yes (MSRC assessment)
Customer action
Required: follow the MSRC remediation guidance
Component
.NET
Weakness
CWE-1325: Improperly Controlled Sequential Memory Allocation
Issued by
GitHub_M
Published
13 Oct 2026 · October 2026
Last revised
15 Oct 2026Updated the Security Updates table to add KB article links for .NET 11.0. This is an informational change only; the fixed builds are unchanged.
CVSS 3.1 base metricsRed raises the risk · green lowers it
Attack vector
NetworkAV:N
Attack complexity
LowAC:L
Privileges required
NonePR:N
User interaction
NoneUI:N
Scope
UnchangedS:U
Confidentiality
NoneC:N
Integrity
NoneI:N
Availability
LowA:L

Updates that fix it

0 KBs

No KB listed

No KB update is listed in the collected MSRC record. Check the MSRC advisory for product releases and other remedies.

Affected products

Developer Tools, Open Source Software, Other
16 affected products
  • MessagePack 2.5.303
  • MessagePack 3.1.9
  • Microsoft Visual Studio 2022 version 17.14
  • Microsoft Visual Studio 2026 version 18.10
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 runtime installed on Linux
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 runtime installed on Mac OS
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 runtime installed on Windows
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Linux
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Mac OS
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Windows
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 runtime installed on Linux
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 runtime installed on Mac OS
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 runtime installed on Windows
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 runtime installed on Linux
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 runtime installed on Mac OS
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 runtime installed on Windows

What changed

  1. Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  2. Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  3. Detection template: Unknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  4. Detection template: No Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  5. Detection template: No Nuclei template listed · Customer action: Required: apply the update → Required: follow the MSRC remediation guidance · Public disclosure: Yes → Yes (MSRC assessment) · Exploitation detected: Not reported by MSRC → No known exploitation (MSRC assessment)
  6. Affected products: Microsoft Edge (Chromium-based), Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Windows, System.Formats.Cbor on .NET 10.0 runtime installed on Linux, System.Formats.Cbor on .NET 10.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 10.0 runtime installed on Windows, System.Formats.Cbor on .NET 8.0 runtime installed on Linux, System.Formats.Cbor on .NET 8.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 8.0 runtime installed on Windows, System.Formats.Cbor on .NET 9.0 runtime installed on Linux, System.Formats.Cbor on .NET 9.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 9.0 runtime installed on Windows → MessagePack 2.5.303, MessagePack 3.1.9, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 runtime installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 runtime installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 runtime installed on Windows
  7. Detection template: Unknown: exploit-code evidence is incomplete or retained → No Nuclei template listed · CISA KEV: Unknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  8. Detection template: No Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained · CISA KEV: Not listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
  9. Affected products: Microsoft Edge (Chromium-based), Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, System.Formats.Cbor on .NET 10.0 installed on Linux, System.Formats.Cbor on .NET 10.0 installed on Mac OS, System.Formats.Cbor on .NET 10.0 installed on Windows, System.Formats.Cbor on .NET 8.0 installed on Linux, System.Formats.Cbor on .NET 8.0 installed on Mac OS, System.Formats.Cbor on .NET 8.0 installed on Windows, System.Formats.Cbor on .NET 9.0 installed on Linux, System.Formats.Cbor on .NET 9.0 installed on Mac OS, System.Formats.Cbor on .NET 9.0 installed on Windows → Microsoft Edge (Chromium-based), Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Windows, System.Formats.Cbor on .NET 10.0 runtime installed on Linux, System.Formats.Cbor on .NET 10.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 10.0 runtime installed on Windows, System.Formats.Cbor on .NET 8.0 runtime installed on Linux, System.Formats.Cbor on .NET 8.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 8.0 runtime installed on Windows, System.Formats.Cbor on .NET 9.0 runtime installed on Linux, System.Formats.Cbor on .NET 9.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 9.0 runtime installed on Windows
  10. Affected products: MessagePack 2.5.303, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, System.Formats.Cbor on .NET 10.0 installed on Linux, System.Formats.Cbor on .NET 10.0 installed on Mac OS, System.Formats.Cbor on .NET 10.0 installed on Windows, System.Formats.Cbor on .NET 8.0 installed on Linux, System.Formats.Cbor on .NET 8.0 installed on Mac OS, System.Formats.Cbor on .NET 8.0 installed on Windows, System.Formats.Cbor on .NET 9.0 installed on Linux, System.Formats.Cbor on .NET 9.0 installed on Mac OS, System.Formats.Cbor on .NET 9.0 installed on Windows → Microsoft Edge (Chromium-based), Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, System.Formats.Cbor on .NET 10.0 installed on Linux, System.Formats.Cbor on .NET 10.0 installed on Mac OS, System.Formats.Cbor on .NET 10.0 installed on Windows, System.Formats.Cbor on .NET 8.0 installed on Linux, System.Formats.Cbor on .NET 8.0 installed on Mac OS, System.Formats.Cbor on .NET 8.0 installed on Windows, System.Formats.Cbor on .NET 9.0 installed on Linux, System.Formats.Cbor on .NET 9.0 installed on Mac OS, System.Formats.Cbor on .NET 9.0 installed on Windows
  11. Publisher revision note: Information published. → Updated the Security Updates table to add KB article links for .NET 11.0. This is an informational change only; the fixed builds are unchanged. · Affected products: MessagePack 2.5.303, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 installed on Windows → MessagePack 2.5.303, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, System.Formats.Cbor on .NET 10.0 installed on Linux, System.Formats.Cbor on .NET 10.0 installed on Mac OS, System.Formats.Cbor on .NET 10.0 installed on Windows, System.Formats.Cbor on .NET 8.0 installed on Linux, System.Formats.Cbor on .NET 8.0 installed on Mac OS, System.Formats.Cbor on .NET 8.0 installed on Windows, System.Formats.Cbor on .NET 9.0 installed on Linux, System.Formats.Cbor on .NET 9.0 installed on Mac OS, System.Formats.Cbor on .NET 9.0 installed on Windows
Page history

Changes are dated when recorded; day views use the last saved version from that UTC day, and citations stay fixed.

Cite this version
Field-level log (41)

Up to 100 recent field edits are shown; older edits may be outside retention.

  1. 6 Nov 2026 · 17:32:22 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  2. 6 Nov 2026 · 17:32:22 UTC Source coverage: public-exploit-codeIncomplete → Current
  3. 6 Nov 2026 · 17:32:22 UTC Source coverage: first-epssIncomplete → Current
  4. 6 Nov 2026 · 17:32:22 UTC Source coverage: msrc-cvrfIncomplete → Current
  5. 6 Nov 2026 · 16:31:02 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  6. 6 Nov 2026 · 16:31:02 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  7. 6 Nov 2026 · 16:31:02 UTC Source coverage: first-epssCurrent → Incomplete
  8. 6 Nov 2026 · 16:31:02 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  9. 2 Nov 2026 · 17:30:39 UTC Public detection templateUnknown: detection-template evidence is incomplete or retained → No Nuclei template listed
  10. 2 Nov 2026 · 17:30:39 UTC Source coverage: public-exploit-codeIncomplete → Current
  11. 2 Nov 2026 · 17:30:39 UTC Source coverage: first-epssIncomplete → Current
  12. 2 Nov 2026 · 17:30:39 UTC Source coverage: msrc-cvrfIncomplete → Current
  13. 2 Nov 2026 · 16:27:39 UTC Public detection templateNo Nuclei template listed → Unknown: detection-template evidence is incomplete or retained
  14. 2 Nov 2026 · 16:27:39 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  15. 2 Nov 2026 · 16:27:39 UTC Source coverage: first-epssCurrent → Incomplete
  16. 2 Nov 2026 · 16:27:39 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  17. 29 Oct 2026 · 20:19:26 UTC Public detection templateNo Nuclei template listed
  18. 29 Oct 2026 · 20:19:26 UTC EPSSNot scored → No EPSS score collected
  19. 29 Oct 2026 · 20:19:26 UTC Customer actionRequired: apply the update → Required: follow the MSRC remediation guidance
  20. 29 Oct 2026 · 20:19:26 UTC Publicly disclosedYes → Yes (MSRC assessment)
  21. 29 Oct 2026 · 20:19:26 UTC Exploitation detectedNot reported by MSRC → No known exploitation (MSRC assessment)
  22. 25 Oct 2026 · 19:05:13 UTC Affected productsMicrosoft Edge (Chromium-based), Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Windows, System.Formats.Cbor on .NET 10.0 runtime installed on Linux, System.Formats.Cbor on .NET 10.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 10.0 runtime installed on Windows, System.Formats.Cbor on .NET 8.0 runtime installed on Linux, System.Formats.Cbor on .NET 8.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 8.0 runtime installed on Windows, System.Formats.Cbor on .NET 9.0 runtime installed on Linux, System.Formats.Cbor on .NET 9.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 9.0 runtime installed on Windows → MessagePack 2.5.303, MessagePack 3.1.9, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 runtime installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 runtime installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 runtime installed on Windows
  23. 23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
  24. 23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  25. 23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
  26. 23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
  27. 23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
  28. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
  29. 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
  30. 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
  31. 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  32. 23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
  33. 23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
  34. 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  35. 22 Oct 2026 · 22:02:57 UTC Affected productsMicrosoft Edge (Chromium-based), Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, System.Formats.Cbor on .NET 10.0 installed on Linux, System.Formats.Cbor on .NET 10.0 installed on Mac OS, System.Formats.Cbor on .NET 10.0 installed on Windows, System.Formats.Cbor on .NET 8.0 installed on Linux, System.Formats.Cbor on .NET 8.0 installed on Mac OS, System.Formats.Cbor on .NET 8.0 installed on Windows, System.Formats.Cbor on .NET 9.0 installed on Linux, System.Formats.Cbor on .NET 9.0 installed on Mac OS, System.Formats.Cbor on .NET 9.0 installed on Windows → Microsoft Edge (Chromium-based), Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 runtime installed on Windows, System.Formats.Cbor on .NET 10.0 runtime installed on Linux, System.Formats.Cbor on .NET 10.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 10.0 runtime installed on Windows, System.Formats.Cbor on .NET 8.0 runtime installed on Linux, System.Formats.Cbor on .NET 8.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 8.0 runtime installed on Windows, System.Formats.Cbor on .NET 9.0 runtime installed on Linux, System.Formats.Cbor on .NET 9.0 runtime installed on Mac OS, System.Formats.Cbor on .NET 9.0 runtime installed on Windows
  36. 22 Oct 2026 · 22:02:57 UTC ExploitabilityNot assessed → Exploitation Less Likely
  37. 18 Oct 2026 · 14:54:30 UTC Link: October 2026/security?release=2026-Oct#cves
  38. 16 Oct 2026 · 16:13:25 UTC Affected productsMessagePack 2.5.303, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, System.Formats.Cbor on .NET 10.0 installed on Linux, System.Formats.Cbor on .NET 10.0 installed on Mac OS, System.Formats.Cbor on .NET 10.0 installed on Windows, System.Formats.Cbor on .NET 8.0 installed on Linux, System.Formats.Cbor on .NET 8.0 installed on Mac OS, System.Formats.Cbor on .NET 8.0 installed on Windows, System.Formats.Cbor on .NET 9.0 installed on Linux, System.Formats.Cbor on .NET 9.0 installed on Mac OS, System.Formats.Cbor on .NET 9.0 installed on Windows → Microsoft Edge (Chromium-based), Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, System.Formats.Cbor on .NET 10.0 installed on Linux, System.Formats.Cbor on .NET 10.0 installed on Mac OS, System.Formats.Cbor on .NET 10.0 installed on Windows, System.Formats.Cbor on .NET 8.0 installed on Linux, System.Formats.Cbor on .NET 8.0 installed on Mac OS, System.Formats.Cbor on .NET 8.0 installed on Windows, System.Formats.Cbor on .NET 9.0 installed on Linux, System.Formats.Cbor on .NET 9.0 installed on Mac OS, System.Formats.Cbor on .NET 9.0 installed on Windows
  39. 15 Oct 2026 · 21:30:54 UTC Revision noteInformation published. → Updated the Security Updates table to add KB article links for .NET 11.0. This is an informational change only; the fixed builds are unchanged.
  40. 15 Oct 2026 · 21:30:54 UTC Last revised13 Oct 2026 07:00 UTC → 15 Oct 2026 07:00 UTC
  41. 15 Oct 2026 · 21:30:54 UTC Affected productsMessagePack 2.5.303, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 10.0 installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 8.0 installed on Windows, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 9.0 installed on Windows → MessagePack 2.5.303, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.10, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Linux, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Mac OS, Microsoft.AspNetCore.SignalR.Protocols.MessagePack on .NET 11.0 installed on Windows, System.Formats.Cbor on .NET 10.0 installed on Linux, System.Formats.Cbor on .NET 10.0 installed on Mac OS, System.Formats.Cbor on .NET 10.0 installed on Windows, System.Formats.Cbor on .NET 8.0 installed on Linux, System.Formats.Cbor on .NET 8.0 installed on Mac OS, System.Formats.Cbor on .NET 8.0 installed on Windows, System.Formats.Cbor on .NET 9.0 installed on Linux, System.Formats.Cbor on .NET 9.0 installed on Mac OS, System.Formats.Cbor on .NET 9.0 installed on Windows

Explore global source statements, affected packages and advisory history for CVE-2026-92707. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-92707

Published

MessagePack-CSharp

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "MessagePack-CSharp",
                    "product": "MessagePack-CSharp",
                    "versions": [
                        {
                            "version": "< 2.5.303",
                            "status": "affected"
                        },
                        {
                            "version": ">= 3.0.0, < 3.1.9",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-102315

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Oct 15, 2026, 6:35:49 PM

dateUpdated: Oct 15, 2026, 8:12:15 PM

15 related source bulletins · separate from aliases

RHSA-2026:89735: Red Hat Security Advisory: .NET 9.0 security update

CVE-2026-58280 · CVE-2026-58649 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-69806 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:88422: Red Hat Security Advisory: .NET 8.0 security update

CVE-2026-58280 · CVE-2026-58649 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96222 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:86171: Red Hat Security Advisory: .NET 9.0 security, bug fix, and enhancement update

CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:88474: Red Hat Security Advisory: .NET 8.0 security update

CVE-2026-58280 · CVE-2026-58649 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96222 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:88425: Red Hat Security Advisory: .NET 8.0 security update

CVE-2026-58280 · CVE-2026-58649 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96222 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:86594: Red Hat Security Advisory: .NET 8.0 security, bug fix, and enhancement update

CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96222 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:86168: Red Hat Security Advisory: .NET 8.0 security, bug fix, and enhancement update

CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96222 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:86172: Red Hat Security Advisory: .NET 9.0 security, bug fix, and enhancement update

CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

WID-SEC-W-2026-3893: Microsoft Entwicklerwerkzeuge: Mehrere Schwachstellen

CVE-2026-100205 · CVE-2026-102229 · CVE-2026-102231 · CVE-2026-102232 · CVE-2026-102233 · CVE-2026-102234 · CVE-2026-102235 · CVE-2026-102238 · CVE-2026-102851 · CVE-2026-102869 · CVE-2026-102870 · CVE-2026-103572 · CVE-2026-105016 · CVE-2026-105729 · CVE-2026-105732 · CVE-2026-108398 · CVE-2026-109468 · CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69370 · CVE-2026-69651 · CVE-2026-70007 · CVE-2026-70035 · CVE-2026-70098 · CVE-2026-70159 · CVE-2026-70161 · CVE-2026-70162 · CVE-2026-70165 · CVE-2026-70174 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70190 · CVE-2026-70194 · CVE-2026-70196 · CVE-2026-70197 · CVE-2026-83520 · CVE-2026-84008 · CVE-2026-85363 · CVE-2026-85790 · CVE-2026-87697 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96222 · CVE-2026-96224 · CVE-2026-96225 · CVE-2026-96229 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96232 · CVE-2026-96233 · CVE-2026-96234 · CVE-2026-96235 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96251 · CVE-2026-96303 · CVE-2026-96957 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960 · CVE-2026-97788 · CVE-2026-97801

RHSA-2026:86170: Red Hat Security Advisory: .NET 9.0 security, bug fix, and enhancement update

CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:86193: Red Hat Security Advisory: .NET 10.0 security, bug fix, and enhancement update

CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96957 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960 · CVE-2026-102870

RHSA-2026:88424: Red Hat Security Advisory: .NET 9.0 security update

CVE-2026-58280 · CVE-2026-58649 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-69806 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:86195: Red Hat Security Advisory: .NET 10.0 security, bug fix, and enhancement update

CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96957 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960 · CVE-2026-102870

RHSA-2026:86169: Red Hat Security Advisory: .NET 8.0 security, bug fix, and enhancement update

CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96222 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960

RHSA-2026:86192: Red Hat Security Advisory: .NET 10.0 security, bug fix, and enhancement update

CVE-2026-58280 · CVE-2026-66822 · CVE-2026-69651 · CVE-2026-70159 · CVE-2026-70175 · CVE-2026-70179 · CVE-2026-70181 · CVE-2026-70183 · CVE-2026-70186 · CVE-2026-70188 · CVE-2026-70196 · CVE-2026-84008 · CVE-2026-88092 · CVE-2026-92707 · CVE-2026-96225 · CVE-2026-96230 · CVE-2026-96231 · CVE-2026-96233 · CVE-2026-96236 · CVE-2026-96237 · CVE-2026-96238 · CVE-2026-96957 · CVE-2026-96958 · CVE-2026-96959 · CVE-2026-96960 · CVE-2026-102870

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-92707

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-1325

Original publisher date fields

published: 2026-10-15T19:17:48.703

lastModified: 2026-10-16T16:00:33.533

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-qhrr-8q5h-9q3h

Published

MessagePack

NuGet

ECOSYSTEM · introduced 0 → fixed 2.5.303

122 explicitly affected versions

0.1.0-beta, 0.2.0-beta, 0.2.1-beta, 0.2.2-beta, 0.2.3-beta, 0.3.0-beta, 0.4.0, 0.4.1, 0.4.2, 0.5.0, 0.6.0, 0.6.1, 0.7.0, 0.7.2, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 0.8.4, 0.8.5, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.1.0, 1.1.1, 1.1.1.1, 1.1.2, 1.2.0, 1.2.0.1, 1.2.0.2, 1.2.1, 1.2.2, 1.2.3, 1.3.0, 1.3.1, 1.3.1.1, 1.3.2, 1.3.3, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.5.0, 1.5.0.1, 1.5.0.2, 1.5.1, 1.6.0, 1.6.0.1, 1.6.0.2, 1.6.0.3, 1.6.1, 1.6.1.1, 1.6.1.2, 1.6.2, 1.7.0, 1.7.1, 1.7.2, 1.7.3, 1.7.3.1, 1.7.3.2, 1.7.3.3, 1.7.3.4, 1.7.3.7, 1.8.71-beta, 1.8.74, 1.8.80, 1.9.11, 1.9.3, 1.9.3-g129239b107, 2.0.107-alpha, 2.0.108-alpha, 2.0.110-alpha, 2.0.110-alpha-g1e44a9106f, 2.0.119-beta, 2.0.123-beta, 2.0.171-beta, 2.0.204-beta, 2.0.221-beta, 2.0.231-rc, 2.0.270-rc, 2.0.299-rc, 2.0.323, 2.0.335, 2.1.115, 2.1.143, 2.1.152, 2.1.165, 2.1.194, 2.1.80, 2.1.90, 2.2.113, 2.2.36-alpha, 2.2.44-rc, 2.2.60, 2.2.85, 2.3.112, 2.3.58-alpha, 2.3.73-alpha, 2.3.75, 2.3.85, 2.4.14-alpha, 2.4.23-alpha, 2.4.35, 2.4.59, 2.5.103, 2.5.108, 2.5.124, 2.5.129, 2.5.140, 2.5.168, 2.5.171, 2.5.172, 2.5.187, 2.5.192, 2.5.198, 2.5.205, 2.5.301, 2.5.302, 2.5.64-alpha, 2.5.94

MessagePack

NuGet

ECOSYSTEM · introduced 3.0.0 → fixed 3.1.9

17 explicitly affected versions

3.0.111-alpha, 3.0.129-beta, 3.0.134-beta, 3.0.208-rc-0001, 3.0.3, 3.0.300, 3.0.308, 3.0.54-alpha, 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.1.6, 3.1.7, 3.1.8

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

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