PT-2026-24305 · Microsoft · Windows

Wisiyeon · Published 2026-03-10 · Updated 2026-03-16 · CVE-2026-25178

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. Successful exploitation could allow an authorized attacker to elevate privileges locally. The issue involves utilizing memory after it has been freed.

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:2026-02991

CVE-2026-25178

Affected Products

Windows

References · 7

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-25178 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-02991 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-25178 · Security Note
• https://osv.dev/vulnerability/CVE-2026-25178 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-25178 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25178 · Vendor Advisory
• https://twitter.com/CVEnew/status/2033361149563961829 · Twitter Post