High severity7.8NVD Advisory· Published Oct 13, 2026· Updated Oct 13, 2026

CVE-2026-85884

Description

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

Affected products

Microsoft/Windows Health and Optimized Experiences Servicellm-fuzzy

Patches

Vulnerability mechanics

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85884nvd

News mentions

Microsoft Patch Tuesday for October 2026 — Snort rules and prominent vulnerabilities
Cisco Talos Intelligence · Oct 13, 2026

cvss	0.507
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000