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CVE-2025-32701: Microsoft Windows Common Log File System (CLFS) Driver Use-After-Free Vulnerability

criticalknown exploitedCVE-2025-32701
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Windows Common Log File System (CLFS) Driver contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Windows Common Log File SystemPrivilege escalation
What
A use-after-free vulnerability allows an authorized attacker to elevate privileges locally.
Who is affected
Users of Microsoft Windows with the Common Log File System Driver installed.
Urgency
Remediation is critical due to active exploitation and the severity of the vulnerability.
Action
Install the latest security update from Microsoft to mitigate the risk.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-05-13
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-32701

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-32701coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Windows Common

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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