CVE-2025-32709
Actively exploited. CVE-2025-32709 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-05-13) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2025-32709 is indexed in GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to escalate privileges to administrator.
CSIRTS triage
- What
- This vulnerability allows an authorized attacker to escalate privileges to administrator.
- Who is affected
- Authorized users of Microsoft Windows with the Ancillary Function Driver for WinSock are affected.
- Urgency
- Remediation is critical as the vulnerability is actively exploited.
- Action
- Users should apply the latest updates for the Ancillary Function Driver.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2025-32709
Get an email if CVE-2025-32709 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 74% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2025-32709 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2025-32709: Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerabilitycisa-kev · 2025-05-13
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2025-32709)