Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 13/05/2025. Patch affected systems as an emergency.
| Package | Affected versions | Patched versions |
|---|---|---|
| Windows | Versions not published yet (product named by CISA KEV) | |
Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
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