MSRC-CVE-2025-55697 — Azure Local Elevation of Privilege Vulnerability

Summary

Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Unlikely. Customer action: Required.

Details

What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Security updates
10.0.26100.6899 — https://support.microsoft.com/help/5066835
10.0.25398.1913 — https://support.microsoft.com/help/5066780

Vulnerabilities 1

High 7.8

CVE-2025-55697

Azure Local Elevation of Privilege Vulnerability

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

Microsoft Windows Server 2025 Windows Server 2025 (Server Core installation) Windows Server 2022, 23H2 Edition (Server Core installation) Windows

Oct 14, 2025

Revision history

2025-10-14 #1
Information published.

References

CVE-2025-55697 Azure Local Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55697
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss