PT-2026-58439 · Microsoft · Windows Ancillary Function Driver For Winsock

Published 2026-07-14 · Updated 2026-07-15 · CVE-2026-50462

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/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 External control of a file name or path in the Windows Ancillary Function Driver for WinSock allows 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.

Weakness Enumeration

CWE-73

Related Identifiers

CVE-2026-50462

Affected Products

Windows Ancillary Function Driver For Winsock

References · 5

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-50462 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50462 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-50462 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-50462 · Security Note
• https://twitter.com/windowsforum/status/2077340687117259177 · Twitter Post