CISA Known Exploited Vulnerability
This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.
Remediation Deadline: Mar 4, 2025
Description
Microsoft Windows Ancillary Function Driver for WinSock contains a heap-based buffer overflow vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.
EPSS — Exploit Probability
9.5%
Higher than 92.7% of all CVEs
Required Action
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21418 ; https://nvd.nist.gov/vuln/detail/CVE-2025-21418
Risk Assessment
ELEVATEDIn CISA KEV
Details
- Severity
- High
- EPSS
- 9.5%
- CISA KEV
- Yes
- Ransomware
- Unknown
- Articles
- 0
Timeline
Published
Feb 11, 2025
Added to KEV
Feb 11, 2025
Remediation Due
Mar 4, 2025