CVE-2025-32709

high

Description

Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-32709

https://www.securityweek.com/august-2026-patch-tuesday-microsoft-fixes-421-cves-one-exploited-zero-day/

https://www.theregister.com/2025/05/14/patch_tuesday_may/

https://www.infosecurity-magazine.com/news/microsoft-seven-zerodays-may-patch/

https://securityaffairs.com/177856/security/u-s-cisa-adds-microsoft-windows-flaws-to-its-known-exploited-vulnerabilities-catalog.html

https://www.securityweek.com/zero-day-attacks-highlight-another-busy-microsoft-patch-tuesday/

https://www.cisa.gov/news-events/alerts/2025/05/13/cisa-adds-five-known-exploited-vulnerabilities-catalog

https://www.tenable.com/blog/microsofts-august-2026-patch-tuesday-addresses-398-cves-cve-2026-68820

https://www.tenable.com/blog/microsofts-may-2025-patch-tuesday-addresses-71-cves-cve-2025-32701-cve-2025-32706

https://github.com/AdnanSiyat/How-to-Patch-CVE-2025-32709

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-32709

Details

Source: Mitre, NVD

Published: 2025-05-13

Updated: 2026-02-13

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.13228