CVE-2026-69733

Windows Update Elevation of Privilege Vulnerability

CVE-2026-69733 is fixed in 12 products on 1 platform, first by KB5126653, released October 13, 2026. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent

CVSS

7.8

Important

Exploitation

More likely

Vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0063

50th percentile

<p>Untrusted search path in Windows Update allows an authorized attacker to elevate privileges locally.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 11 Version 23H2 for ARM64-based Systems	22631.7652	KB5126653	Oct 13, 2026
Windows 11 Version 23H2 for x64-based Systems	22631.7652	KB5126653	Oct 13, 2026
Windows 11 Version 24H2 for ARM64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 24H2 for x64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 25H2 for ARM64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 25H2 for x64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 26H1 for ARM64-based Systems	28000.3231	KB5127646	Oct 13, 2026
Windows 11 Version 26H2 for ARM64-based Systems		KB5127648	Oct 13, 2026
Windows 11 Version 26H2 for x64-based Systems		KB5127648	Oct 13, 2026
Windows 11 version 26H1 for x64-based Systems	28000.3231	KB5127646	Oct 13, 2026
Windows Server 2025	26100.33650	KB5126646	Oct 13, 2026
Windows Server 2025 (Server Core installation)	26100.33650	KB5126646	Oct 13, 2026

Details

Published
October 13, 2026
Weakness
Untrusted Search Path
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69733

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