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Recorded 28 Oct 2026 at 20:00 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.

The historical field “Public exploit code” recorded Nuclei detection-template membership. It did not establish exploit availability. The original recorded fields remain below.

The historical “Publicly disclosed: No” field could represent a missing MSRC assessment. It does not establish that the vulnerability was undisclosed. The original recorded fields remain below.

CVEMicrosoft Security Response Center

.NET and Visual Studio Remote Code Execution Vulnerability

Heap-based buffer overflow in Visual Studio allows an unauthorized attacker to execute code over a network.

What it said

CVE
CVE-2026-71328
Severity
Important
CVSS base score
8.8
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Impact
Remote Code Execution
Exploitation detected
Not reported by MSRC
Publicly disclosed
No
Exploitability
Exploitation Unlikely
Component
Visual Studio
Weakness
CWE-122: Heap-based Buffer Overflow
Issued by
Microsoft
Customer action
Required: apply the update
Affected products
.NET 10.0 runtime installed on Windows, .NET 11.0 runtime installed on Windows, .NET 8.0 runtime installed on Windows, .NET 9.0 runtime installed on Windows, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.9
Updates that fix it
KB5126104: .NET 8.0 runtime installed on Windows; KB5126105: .NET 9.0 runtime installed on Windows (restart required); KB5126106: .NET 10.0 runtime installed on Windows
CISA KEV
Not listed in the collected catalog
EPSS
0.8%; scored 28 Oct 2026
Public exploit code
No Nuclei template listed
Published
8 Sep 2026 07:00 UTC
Last revised
25 Sep 2026 07:00 UTC
Revision note
Security Updates table updated provide links to the KB articles and download center updates. Microsoft recommends installing the updates.

Source evidence when recorded

Microsoft security releases
Complete at observationRead 28 Oct 2026 at 19:58 UTC
CISA KEV
Complete at observationRead 28 Oct 2026 at 19:58 UTC
FIRST EPSS
Complete at observationRead 28 Oct 2026 at 19:58 UTC
Public detection templates (Nuclei)
Complete at observationRead 28 Oct 2026 at 19:58 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

What changed

  1. Fixes: KB5126104: .NET 8.0 installed on Windows; KB5126105: .NET 9.0 installed on Windows (restart required); KB5126106: .NET 10.0 installed on Windows → KB5126104: .NET 8.0 runtime installed on Windows; KB5126105: .NET 9.0 runtime installed on Windows (restart required); KB5126106: .NET 10.0 runtime installed on Windows · Affected products: .NET 10.0 installed on Windows, .NET 11.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on Windows, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.9 → .NET 10.0 runtime installed on Windows, .NET 11.0 runtime installed on Windows, .NET 8.0 runtime installed on Windows, .NET 9.0 runtime installed on Windows, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.9
  2. 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
  3. 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
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 (30)

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

  1. 28 Oct 2026 · 20:00:33 UTC EPSS0.8%; scored 27 Oct 2026 → 0.8%; scored 28 Oct 2026
  2. 27 Oct 2026 · 16:51:02 UTC Updates that fix itKB5126104: .NET 8.0 installed on Windows; KB5126105: .NET 9.0 installed on Windows (restart required); KB5126106: .NET 10.0 installed on Windows → KB5126104: .NET 8.0 runtime installed on Windows; KB5126105: .NET 9.0 runtime installed on Windows (restart required); KB5126106: .NET 10.0 runtime installed on Windows
  3. 27 Oct 2026 · 16:51:02 UTC Affected products.NET 10.0 installed on Windows, .NET 11.0 installed on Windows, .NET 8.0 installed on Windows, .NET 9.0 installed on Windows, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.9 → .NET 10.0 runtime installed on Windows, .NET 11.0 runtime installed on Windows, .NET 8.0 runtime installed on Windows, .NET 9.0 runtime installed on Windows, Microsoft Visual Studio 2022 version 17.14, Microsoft Visual Studio 2026 version 18.9
  4. 27 Oct 2026 · 15:48:13 UTC EPSS0.8%; scored 26 Oct 2026 → 0.8%; scored 27 Oct 2026
  5. 26 Oct 2026 · 23:57:09 UTC EPSS0.8%; scored 25 Oct 2026 → 0.8%; scored 26 Oct 2026
  6. 25 Oct 2026 · 17:12:51 UTC EPSS0.8%; scored 24 Oct 2026 → 0.8%; scored 25 Oct 2026
  7. 25 Oct 2026 · 01:34:18 UTC EPSS0.8%; scored 23 Oct 2026 → 0.8%; scored 24 Oct 2026
  8. 23 Oct 2026 · 15:51:28 UTC EPSS0.8%; scored 22 Oct 2026 → 0.8%; scored 23 Oct 2026
  9. 23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
  10. 23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
  11. 23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
  12. 23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
  13. 23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
  14. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
  15. 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
  16. 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
  17. 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
  18. 23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
  19. 23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete
  20. 23 Oct 2026 · 08:31:50 UTC Source coverage: msrc-cvrfCurrent → Incomplete
  21. 22 Oct 2026 · 17:33:15 UTC EPSS0.8%; scored 21 Oct 2026 → 0.8%; scored 22 Oct 2026
  22. 21 Oct 2026 · 21:47:24 UTC EPSS0.8%; scored 20 Oct 2026 → 0.8%; scored 21 Oct 2026
  23. 20 Oct 2026 · 20:53:31 UTC EPSS0.8%; scored 19 Oct 2026 → 0.8%; scored 20 Oct 2026
  24. 19 Oct 2026 · 15:12:40 UTC EPSS0.8%; scored 18 Oct 2026 → 0.8%; scored 19 Oct 2026
  25. 18 Oct 2026 · 14:54:30 UTC EPSS0.8%; scored 16 Oct 2026 → 0.8%; scored 18 Oct 2026
  26. 18 Oct 2026 · 14:54:30 UTC Link: September 2026/security?release=2026-Sep#cves
  27. 16 Oct 2026 · 16:13:25 UTC EPSS0.8%; scored 15 Oct 2026 → 0.8%; scored 16 Oct 2026
  28. 15 Oct 2026 · 21:30:54 UTC EPSS0.8%; scored 14 Oct 2026 → 0.8%; scored 15 Oct 2026
  29. 15 Oct 2026 · 01:07:54 UTC EPSS0.8%; scored 13 Oct 2026 → 0.8%; scored 14 Oct 2026
  30. 14 Oct 2026 · 11:22:42 UTC Source coverage: msrc-cvrfIncomplete → Current
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.

Sources read 11 Nov 05:47 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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