CVE-2026-62902

## Executive summary 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. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/433 ## CVSS Details - **Version:** 3.1 - **Severity:** Medium - **Score:** 6.5 - **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C` - **Weakness:** CWE-829: Inclusion of Functionality from Untrusted Control Sphere; CWE-693: Protection Mechanism Failure; CWE-918: Server-Side Request Forgery (SSRF) ## Affected Platforms - **Platforms:** Windows - **Architectures:** All ## <a name="affected-packages"></a>Affected Packages The vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below ### <a name=".NET 10"></a>.NET 10 Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- [Microsoft.WindowsDesktop.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-arm64) | >= 10.0.0, <= 10.0.10 | 10.0.11 [Microsoft.WindowsDesktop.App.Runtime.win-x64](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-x64) | >= 10.0.0, <= 10.0.10 | 10.0.11 [Microsoft.WindowsDesktop.App.Runtime.win-x86](https://www.nuget.org/packages/Microsoft.WindowsDesktop.App.Runtime.win-x86) | >= 10.0.0, <= 10.0.10 | 10.0.11 ### <a name=".NET 9"></a>.NET 9 Package name | Affected version | Patched version ------------ | ---------------- | ------------------------- [Microsoft.WindowsDesktop.App.Runtime.win-arm64](https://www.nuget.org/packages/Microsoft.WindowsD