MEDIUM 6.2 Microsoft

CVE-2026-45491

.NET Tampering Vulnerability

Microsoft Security Update 2026-Jun: .NET Tampering Vulnerability

Affected Products

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

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45491
https://nvd.nist.gov/vuln/detail/CVE-2026-45491

Published: 2026-06-09 · Source: Microsoft · Feed updated: 2026-08-04

This medium severity vulnerability with a CVSS score of 6.2 was published on 2026-06-09 via Microsoft. Affected: .NET 10.0 installed on Windows, .NET 10.0 installed on Mac OS, .NET 10.0 installed on Linux and 5 more.

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