CVE-2026-62902: Microsoft Security Advisory CVE-2026-62902 – .NET Information Disclosure 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.

A specially crafted document parsed in .NET can trigger the inclusion of functionality from an untrusted control sphere, allowing an unauthorized attacker to disclose information over a network.

References

github.com/advisories/GHSA-9mrh-pw7c-9mqm
github.com/dotnet/announcements/issues/433
github.com/dotnet/wpf/security/advisories/GHSA-9mrh-pw7c-9mqm
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62902
nvd.nist.gov/vuln/detail/CVE-2026-62902

Code Behaviors & Features

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