Vulnerabilities
CVE-2026-96234: .NET 11.0 Information Disclosure Fixed – Verify Your Installations
Microsoft has confirmed that the CVE-2026-96234 information‑disclosure flaw in .NET 11.0 has been addressed in the current releases. The recent security update table now includes KB article links for .NET 11.0 and Visual Studio, but the underlying fixed builds remain unchanged. Defenders should verify that their environments run the patched versions and review the KB documentation.
What Happened
The CVE-2026-96234 vulnerability exposed sensitive data through a flaw in the .NET 11.0 runtime. Microsoft has released a patch that resolves the issue in the current builds.
Impact
Systems running unpatched .NET 11.0 or older Visual Studio versions could have inadvertently disclosed confidential information. The vulnerability does not allow code execution or privilege escalation.
What to Do
- Confirm that your .NET runtime is at least version 11.0.0.0 or later, and that Visual Studio is updated to the latest release.
- Download the latest security updates from the KB articles linked in the updated Security Updates table.
- Run the .NET Update Checker or use PowerShell to verify the installed build number matches the patched version.
- Review the KB article for detailed remediation steps and any environment‑specific considerations.
Additional Resources
Microsoft Security Advisory: CVE-2026-96234 – https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96234
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