MEDIUM 5.9 Microsoft

CVE-2026-62899

.NET Security Feature Bypass Vulnerability

Microsoft Security Update 2026-Aug: .NET Security Feature Bypass Vulnerability

Affected Products

.NET 10.0 installed on Mac OS
.NET 10.0 installed on Linux
.NET 8.0 installed on Windows
.NET 8.0 installed on Linux
.NET 8.0 installed on Mac OS
.NET 9.0 installed on Linux
.NET 9.0 installed on Mac OS
.NET 9.0 installed on Windows

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62899
https://nvd.nist.gov/vuln/detail/CVE-2026-62899

Published: 2026-08-11 · Source: Microsoft · Feed updated: 2026-08-11

This medium severity vulnerability with a CVSS score of 5.9 was published on 2026-08-11 via Microsoft. Affected: .NET 10.0 installed on Mac OS, .NET 10.0 installed on Linux, .NET 8.0 installed on Windows and 5 more.

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