CVE-2025-21418
KEVMicrosoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability
View CVE record →- Vendor / Project
- Microsoft
- Product
- Windows
- Date added
- Feb 11, 2025
- Due date
- Mar 4, 2025
- Known ransomware use
- Unknown
- CWEs
- CWE-122
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.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.