CVE-2025-32709β€”Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability

PUBLISHEDvulnerability record
2025-05-13 Β· last modified June 21, 2025

Metadata

CVE ID:
CVE-2025-32709
Project:
Microsoft
Product:
Windows
Date Added:
2025-05-13
Due Date:
2025-06-03
Last Updated:
June 21, 2025

Vulnerability Name

Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability

Description

Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to escalate privileges to administrator.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:
Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Additional Notes

  • https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-32709
  • https://nvd.nist.gov/vuln/detail/CVE-2025-32709

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