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CVE-2026-85884

Windows Health and Optimized Experiences Service Elevation of Privilege Vulnerability

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 10.0.26100.9711, 10.0.26200.9711, 10.0.28000.3231, 10.0.26300.9711
1 proof of concept on GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

Missing authentication for critical function in Windows Health and Optimized Experiences Service allows an authorized attacker to elevate privileges locally.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Microsoft Windows 11 Version 24H2

    From 10.0.26100.0 · fixed in 10.0.26100.9711

  • Microsoft Windows 11 Version 25H2

    From 10.0.26200.0 · fixed in 10.0.26200.9711

  • Microsoft Windows 11 version 26H1

    From 10.0.28000.0 · fixed in 10.0.28000.3231

  • Microsoft Windows 11 Version 26H2

    From 10.0.26300.0 · fixed in 10.0.26300.9711

References 2

msrc.microsoft.com

GitHub · Beardhammer/CVE-2026-85884