CVE-2026-69725

Windows Hello Elevation of Privilege Vulnerability

CVE-2026-69725 is fixed in 14 products on 1 platform, first by KB5122878, released September 8, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent

CVSS

7.8

Critical

Exploitation

None reported

Exploitation Unlikely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0033

26th percentile

<p>Double free in Windows Hello allows an authorized attacker to elevate privileges locally.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 10 Version 21H2 for 32-bit Systems		KB5122878	Sep 8, 2026
Windows 10 Version 21H2 for ARM64-based Systems		KB5122878	Sep 8, 2026
Windows 10 Version 21H2 for x64-based Systems		KB5122878	Sep 8, 2026
Windows 10 Version 22H2 for 32-bit Systems		KB5122878	Sep 8, 2026
Windows 10 Version 22H2 for ARM64-based Systems		KB5122878	Sep 8, 2026
Windows 10 Version 22H2 for x64-based Systems		KB5122878	Sep 8, 2026
Windows 11 Version 23H2 for ARM64-based Systems	22631.7582	KB5122880	Sep 8, 2026
Windows 11 Version 23H2 for x64-based Systems	22631.7582	KB5122880	Sep 8, 2026
Windows 11 Version 24H2 for ARM64-based Systems		KB5124008	Sep 8, 2026
Windows 11 Version 24H2 for x64-based Systems		KB5124008	Sep 8, 2026
Windows 11 Version 25H2 for ARM64-based Systems		KB5124008	Sep 8, 2026
Windows 11 Version 25H2 for x64-based Systems		KB5124008	Sep 8, 2026
Windows 11 Version 26H1 for ARM64-based Systems	28000.2954	KB5124012	Sep 8, 2026
Windows 11 version 26H1 for x64-based Systems	28000.2954	KB5124012	Sep 8, 2026

Details

Published
September 8, 2026
Weakness
Double Free
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69725

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