PT-2026-32745 · Microsoft · Windows Ancillary Function Driver For Winsock+1

Angelboy · Published 2026-04-14 · Updated 2026-04-25 · CVE-2026-26168

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:C/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 race condition occurs due to improper synchronization when using a shared resource in the Windows Ancillary Function Driver for WinSock. This allows an authorized attacker to elevate privileges locally. A race condition is a situation where the system's substantive behavior is dependent on the sequence or timing of other uncontrollable events.

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

DoS

LPE

Use After Free

Race Condition

Weakness Enumeration

CWE-416

CWE-362

Related Identifiers

BDU:2026-05287

CVE-2026-26168

Affected Products

Windows

Windows Ancillary Function Driver For Winsock

References · 7

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-26168 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-26168 · Security Note
• https://bdu.fstec.ru/vul/2026-05287 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-26168 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26168 · Vendor Advisory
• https://twitter.com/CVEnew/status/2044358620008067563 · Twitter Post
• https://twitter.com/giuseppe_1337/status/2047859458085159134 · Twitter Post