CVE-2024-21409: .NET Elevation of Privilege Vulnerability

April 17, 2024 (updated September 24, 2024)

Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 6.0, .NET 7.0 ,and .NET 8.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.

A use-after-free vulnerability exists in WPF which may result in Elevation of Privilege when viewing untrusted documents. This is a Windows only vulnerability.

References

github.com/advisories/GHSA-6qmx-42h2-j8h6
github.com/dotnet/wpf
github.com/dotnet/wpf/security/advisories/GHSA-6qmx-42h2-j8h6
msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21409
nvd.nist.gov/vuln/detail/CVE-2024-21409

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