CVE-2026-62871: Microsoft Security Advisory CVE-2026-62871 – .NET Elevation of Privilege Vulnerability

August 11, 2026

Microsoft is releasing this security advisory to provide information about a vulnerability in Windows Presentation Foundation. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

References

github.com/advisories/GHSA-vg44-h755-9hw7
github.com/dotnet/announcements/issues/431
github.com/dotnet/wpf/security/advisories/GHSA-vg44-h755-9hw7
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62871
nvd.nist.gov/vuln/detail/CVE-2026-62871

Code Behaviors & Features

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