HIGH CISA KEV
CVE-2025-21418
CVSS v3
7.8
HIGH
EPSS Score
8.4 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CISA Known Exploited Vulnerability
- Date Added
- 2025-02-11
- Patch Due Date
- 2025-03-04
- Ransomware Use
- Unknown
Technical details
- Published
- 2025-02-11
Frequently asked questions
What is CVE-2025-21418?
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Is CVE-2025-21418 actively exploited?
Yes. CVE-2025-21418 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-03-04.
What is the CVSS score for CVE-2025-21418?
CVE-2025-21418 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2025-21418 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
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