CVE-2026-85333 Microsoft CVE debrief

Who should care

System administrators and security teams responsible for Windows systems should assess exposure and apply patches to prevent local privilege escalation attacks.

Why it matters

CVE-2026-85333 is a race condition vulnerability in Windows Performance Monitor that allows local privilege escalation. System administrators and security teams should assess exposure and apply patches to prevent attacks.

• Verify and apply patches for Windows Performance Monitor to prevent local privilege escalation
• Assess exposure of Windows systems to the vulnerability
• Monitor Windows Performance Monitor for suspicious activity
• Prioritize patching for high-risk systems

Technical summary

A race condition vulnerability exists in Windows Performance Monitor, allowing an authorized attacker to elevate privileges locally. The vulnerability affects multiple Windows versions, including Windows 10, Windows 11, and Windows Server. Microsoft has released patches for the vulnerability.

Defensive priority

Apply patches immediately for Windows Performance Monitor to prevent local privilege escalation attacks.

Recommended defensive actions

• Apply patches for Windows Performance Monitor
• Verify and apply patches for affected Windows versions
• Monitor Windows Performance Monitor for suspicious activity

Evidence notes

The CVE Program and NVD provide official records of the vulnerability. Microsoft has released a patch for the vulnerability. The vulnerability affects multiple Windows versions, including Windows 10, Windows 11, and Windows Server. There is no evidence of public exploitation, but defenders should verify and apply patches for Windows Performance Monitor to prevent local privilege escalation. The official CVE Program record and NIST NVD detail page provide additional information on the

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.