CVE-2025-21418 — Microsoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability
2025-02-11 • CISA Known Exploited Vulnerability
[event] 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.
> AFFECTED SOFTWARE
| Field | Value |
|---|---|
| Vendor | Microsoft |
| Product | Windows |
| CWE | CWE-122 |
| CVE ID | CVE-2025-21418 |
| Date Added | 2025-02-11 |
| Due Date | 2025-03-04 |
| Ransomware Campaign | Unknown |
> MITIGATION
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Due Date: 2025-03-04