CVE-2025-55697

Azure Local Elevation of Privilege Vulnerability

CVE-2025-55697 is fixed in 3 products on 1 platform, first by KB5066780, released October 14, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.8

Important

Exploitation

None reported

Exploitation Unlikely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0036

30th percentile

<p>Heap-based buffer overflow in Azure Local allows an authorized attacker to elevate privileges locally.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows Server 2022, 23H2 Edition (Server Core installation)	25398.1913	KB5066780	Oct 14, 2025
Windows Server 2025		KB5066835	Oct 14, 2025
Windows Server 2025 (Server Core installation)		KB5066835	Oct 14, 2025

Details

Published
October 14, 2025
Weakness
Heap-based Buffer Overflow
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55697

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