PT-2025-28560 · Microsoft · Windows Ancillary Function Driver For Winsock+1

Published 2025-07-08 · Updated 2025-07-09 · CVE-2025-49661

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: The issue is related to an untrusted pointer dereference in the Windows Ancillary Function Driver for WinSock, which allows an authorized attacker to elevate privileges locally. This could potentially lead to increased access and control over the system.

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

Untrusted Pointer Dereference

Weakness Enumeration

CWE-822

Related Identifiers

BDU:2025-08284

CVE-2025-49661

Affected Products

Windows

Windows Ancillary Function Driver For Winsock

References · 7

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49661 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-49661 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-49661 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-49661 · Security Note
• https://osv.dev/vulnerability/CVE-2025-49661 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-08284 · Security Note
• https://twitter.com/CVEnew/status/1942958478563115289 · Twitter Post