CVE DATABASE / CVE-2023-23376
CVE-2023-23376
Microsoft Windows Common Log File System (CLFS) Driver Privilege Escalation Vulnerability
CVSS 7.8 · HIGH
⚠ CISA KEV — ACTIVELY EXPLOITED
RANSOMWARE
On the CISA KEV catalog
Confirmed exploited in the wild. Added 2023-02-14.
Federal remediation due 2023-03-07.
Required action: Apply updates per vendor instructions.
Summary
Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVSS 3.1 breakdown
| Base score | 7.8 (HIGH) |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
Microsoft windows 10 1507Microsoft windows 10 1607Microsoft windows 10 1809Microsoft windows 10 20h2Microsoft windows 10 21h2Microsoft windows 10 22h2Microsoft windows 11 21h2Microsoft windows 11 22h2Microsoft windows server 2008Microsoft windows server 2012Microsoft windows server 2016Microsoft windows server 2019Microsoft windows server 2022
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References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23376
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-23376
Data: NIST NVD + CISA KEV. NVD last modified 2025-10-27. Always verify against the vendor advisory before acting.