Is CVE-2026-62897 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-62897 being exploited in the wild.

How severe is CVE-2026-62897?

High severity, with a CVSS score of 7, published 11 August 2026.

Which products and versions are affected?

Microsoft Windows Presentation Foundation Included in affected .NET versions; Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) ECOSYSTEM:introduced=10.0.0,fixed=10.0.11; Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) ECOSYSTEM:introduced=10.0.0,fixed=10.0.11; Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) ECOSYSTEM:introduced=10.0.0,fixed=10.0.11.

Is there a fix for CVE-2026-62897?

Yes. Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet): upgrade to 10.0.11 or later; Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet): upgrade to 10.0.11 or later; Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet): upgrade to 10.0.11 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-62897 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-62897?

Check whether you run Microsoft .Net, Microsoft .NET Framework, Microsoft Visual Studio 2022 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-62897: Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.

CVE-2026-62897 · Severity: high · CVSS 7 · Published 2026-08-11

A security vulnerability exists in Windows Presentation Foundation (WPF), a framework used for building Windows desktop applications. An attacker could potentially execute malicious code on a user's computer if the user interacts with a specially crafted application. This could lead to a full system compromise, unauthorized data access, or service disruption.

Technologies: Microsoft .Net, Microsoft .NET Framework, Microsoft Visual Studio 2022, Microsoft Visual Studio 2026, Microsoft Windows, Microsoft Windows Presentation Foundation, Microsoft Windows 10 1809, Microsoft Windows 11 26h1, Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet), Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet), Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet). Vendors: Microsoft, NuGet.

Quick answers

Is CVE-2026-62897 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-62897 being exploited in the wild.
How severe is CVE-2026-62897?: High severity, with a CVSS score of 7, published 11 August 2026.
Which products and versions are affected?: Microsoft Windows Presentation Foundation Included in affected .NET versions; Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet) ECOSYSTEM:introduced=10.0.0,fixed=10.0.11; Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet) ECOSYSTEM:introduced=10.0.0,fixed=10.0.11; Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet) ECOSYSTEM:introduced=10.0.0,fixed=10.0.11.
Is there a fix for CVE-2026-62897?: Yes. Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet): upgrade to 10.0.11 or later; Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet): upgrade to 10.0.11 or later; Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet): upgrade to 10.0.11 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-62897 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-62897?: Check whether you run Microsoft .Net, Microsoft .NET Framework, Microsoft Visual Studio 2022 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Microsoft.WindowsDesktop.App.Runtime.win-arm64 (NuGet): upgrade to 10.0.11 or later

dotnet add package Microsoft.WindowsDesktop.App.Runtime.win-arm64 --version 10.0.11

Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet): upgrade to 10.0.11 or later

dotnet add package Microsoft.WindowsDesktop.App.Runtime.win-x64 --version 10.0.11

Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet): upgrade to 10.0.11 or later

dotnet add package Microsoft.WindowsDesktop.App.Runtime.win-x86 --version 10.0.11

Technical details

An integer overflow or wraparound vulnerability (CWE-190) exists in the Windows Presentation Foundation (WPF) component of .NET. The flaw is triggered when the software performs a calculation that produces a value exceeding its storage capacity, leading to memory corruption. An attacker can exploit this by convincing a user to run a malicious application or open a crafted file, resulting in local code execution with the privileges of the current user. The attack requires user interaction and has high complexity due to the nature of the overflow. Patches are available in .NET versions 8.0.30, 9.0.19, and 10.0.11.

Affected products

Microsoft .NET 10.0.0 - 10.0.10 >= 10.0.0, <= 10.0.10
Microsoft .NET 9.0.0 - 9.0.18 >= 9.0.0, <= 9.0.18
Microsoft .NET 8.0.0 - 8.0.29 >= 8.0.0, <= 8.0.29
Microsoft Windows Presentation Foundation (WPF) Included in affected .NET versions

Identifiers

CVE-2026-62897
GHSA-fx4q-gjrx-2jw6

Timeline

2026-08-11: advisory: Initial advisory publication by Microsoft and GitHub
2026-08-11: patched: Patched versions released for .NET 8, 9, and 10

References

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