PT-2025-32805 · Microsoft · Windows Ancillary Function Driver For Winsock+1

Angelboy · Published 2025-08-12 · Updated 2025-08-12 · CVE-2025-53137

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Windows Ancillary Function Driver for WinSock (affected versions not specified)

Description: A use after free issue exists in the Windows Ancillary Function Driver for WinSock that could allow an authorized attacker to elevate privileges locally.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-10153

CVE-2025-53137

Affected Products

Windows

Windows Ancillary Function Driver For Winsock

References · 7

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-53137 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-10153 · Security Note
• https://osv.dev/vulnerability/CVE-2025-53137 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-53137 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53137 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-53137 · Security Note
• https://twitter.com/CVEnew/status/1955322667394806166 · Twitter Post