ACTIVELY EXPLOITED3 sources verified·1 min read
By Lyrie Threat Intelligence·2/11/2025
CVE-2025-21418 added to CISA KEV: Microsoft Windows
Status: ✅ Confirmed exploited in the wild
Date added: 2025-02-11
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Due date: 2025-03-04
Why this matters
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.
Sources
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