CVE-2025-21418

Microsoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability
2.1%
EPSS
82%
Percentile
Yes
Known exploited
0
APAC news · 90d
Summary

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.

Vendor
Microsoft
Product
Windows
Added to KEV
Feb 11, 2025
Remediation due
Mar 4, 2025 (US federal deadline)
Ransomware use
Not known
Weakness
CWE-122
EPSS
2.1% as of Nov 12
In the news
  • No Asia-Pacific article names this CVE yet.
Linked
Actors named alongside it:
none
Incidents exploiting it:
  • none recorded