CVEvulnerability

CVE-2025-32709

7.8 HIGH Known exploited Published 2025-05-13 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

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

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

Added to KEV
2025-05-13
Remediation due
2025-06-03
Ransomware use
Unknown
Required 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.
Notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-32709 ; https://nvd.nist.gov/vuln/detail/CVE-2025-32709
Status
Analyzed
Published
2025-05-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-416

Description

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

Affected configurations

• microsoft windows 10 1507 (< 10.0.10240.21014) • microsoft windows 10 1607 (< 10.0.14393.8066) • microsoft windows 10 1809 (< 10.0.17763.7314) • microsoft windows 10 21h2 (< 10.0.19044.5854) • microsoft windows 10 22h2 (< 10.0.19045.5854) • microsoft windows 11 22h2 (< 10.0.22621.5335) • microsoft windows 11 23h2 (< 10.0.22631.5335) • microsoft windows 11 24h2 (< 10.0.26100.3981) • microsoft windows server 2008 • microsoft windows server 2008 r2 • microsoft windows server 2012 • microsoft windows server 2012 r2 • microsoft windows server 2016 (< 10.0.14393.8066) • microsoft windows server 2019 (< 10.0.17763.7314) • microsoft windows server 2022 (< 10.0.20348.3692) • microsoft windows server 2022 23h2 (< 10.0.25398.1611) • microsoft windows server 2025 (< 10.0.26100.3981)

Related

Weakness · CWE (1)

References