Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability

HIGH 7.8EXPLOITED (CISA KEV)CVE-2025-32706 · Published 13/05/2025 · updated 17/06/2026

Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 13/05/2025. Patch affected systems as an emergency.

Package	Affected versions	Patched versions
Windows Microsoft	Versions not published yet (product named by CISA KEV)

Description

Improper input validation in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-32706 · Vendor Advisory
vicarius.io/vsociety/posts/cve-2025-32706-detection-script-elevation-of-privilege-vulnerability-in-microsoft-windows-common-log-file-system-driver · Exploit
vicarius.io/vsociety/posts/cve-2025-32706-mitigation-script-elevation-of-privilege-vulnerability-in-microsoft-windows-common-log-file-system-driver · Exploit
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2025-32706

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