Vulnerabilities
Microsoft .NET 11.0 Elevation of Privilege Vulnerability CVE‑2026‑96225 Fixed in Latest Update
Microsoft has patched an elevation of privilege flaw in .NET 11.0 (CVE‑2026‑96225). The vulnerability is fixed in the current release; defenders should verify that the latest .NET 11.0 update is installed and that Visual Studio is updated accordingly.
What happened
Microsoft identified an elevation of privilege vulnerability in .NET 11.0, assigned CVE‑2026‑96225. The flaw could allow an attacker to gain higher privileges within a .NET process.
Impact
Only systems running the affected .NET 11.0 build are at risk. The vulnerability does not affect earlier .NET releases or other frameworks. Exploitation requires local code execution or a crafted payload.
What to do
- Confirm the .NET runtime version on all servers and workstations.
- Apply the latest .NET 11.0 security update (KBxxxxxx). The fixed build is identical to the current release; no re‑installation is needed.
- Ensure Microsoft Visual Studio is updated to the latest patch set; download links are provided in the KB article.
- Run the Microsoft Baseline Security Analyzer or similar tools to verify that the vulnerability is no longer present.
- Monitor for any anomalous privilege escalation attempts in your logs.
Additional Notes
Microsoft has updated the Security Updates table to include KB article links for .NET 11.0 and Visual Studio. The update is informational; the fixed builds remain unchanged.
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