Recorded 14 Oct 2026 at 11:22 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.
MessagePack-CSharp Denial of Service Vulnerability
Improperly controlled sequential memory allocation in .NET allows an unauthorized attacker to deny service over a network.
What it said
- CVE
- CVE-2026-92707
- Severity
- Moderate
- CVSS base score
- 5.3
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Impact
- Denial of Service
- Exploitation detected
- Not reported by MSRC
- Publicly disclosed
- Yes
- Exploitability
- Not assessed
- Component
- .NET
- Weakness
- CWE-1325: Improperly Controlled Sequential Memory Allocation
- Issued by
- GitHub_M
- Customer action
- Required: apply the update
- 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
- Updates that fix it
- No KB listed
- CISA KEV
- Not listed in the collected catalog
- EPSS
- Not scored
- Public exploit code
- No Nuclei template listed
- Published
- 13 Oct 2026 07:00 UTC
- Last revised
- 13 Oct 2026 07:00 UTC
- Revision note
- Information published.
Recorded links
Source evidence when recorded
- Microsoft security releases
- Complete at observationRead 14 Oct 2026 at 11:21 UTC
- CISA KEV
- Complete at observationRead 14 Oct 2026 at 11:21 UTC
- FIRST EPSS
- Complete at observationRead 14 Oct 2026 at 11:21 UTC
- Public exploit code
- Complete at observationRead 14 Oct 2026 at 11:21 UTC
Coverage describes the sources at this observation. A complete read then does not establish their current position.
What changed
First observed 14 Oct 2026No field changes in the recorded history.
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