ClosedPatched

Microsoft Windows: Common Log File System (CLFS) Driver Privilege Escalation (CVE-2023-28252)

Microsoft Windows

Microsoft Windows Common Log File System (CLFS) driver contains an unspecified vulnerability that allows for privilege escalation. Added to CISA KEV on 2023-04-11. CISA lists known use in ransomware campaigns.

Why this severity: CVSS 7.8 (NVD), actively exploited (CISA KEV), known ransomware use

Started: Apr 11, 2023
Closed: Apr 11, 2023
CVE: CVE-2023-28252

Follow this incident

Updated Apr 11, 2023

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Apr 11, 2023
CISA added CVE-2023-28252 to the KEV catalog (due 2023-05-02).

Advisories3

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).

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