CVE-2026-81969

Insufficient granularity of access control in Windows Server Update Service allows an authorized…

Risk score: 62/100
CVSS: 7.8 v3.1
Exploit chance (30 days): 0.3%
Published: 13 Oct 2026

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What to know

What it is: Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.
Affected: See advisory
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Why it is Amber

CVSS 7.8 high
On your watchlist: windows server

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81969

Original description

Insufficient granularity of access control in Windows Server Update Service allows an authorized attacker to elevate privileges locally.

Last activity 13 Oct 2026. Patch Forecast updates every hour.