CVE-2025-49661

HIGH

Windows Ancillary Function Driver - Privilege Escalation

Title source: llm
STIX 2.1

Description

Untrusted pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

References (1)

Scores

CVSS v3 7.8
EPSS 0.0037
EPSS Percentile 58.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-822
Status published
Products (17)
microsoft/windows_10_1507 < 10.0.10240.21073 (2 CPE variants)
microsoft/windows_10_1607 < 10.0.14393.8246 (2 CPE variants)
microsoft/windows_10_1809 < 10.0.17763.7558 (2 CPE variants)
microsoft/windows_10_21h2 < 10.0.19044.6093
microsoft/windows_10_22h2 < 10.0.19045.6093
microsoft/windows_11_22h2 < 10.0.22621.5624
microsoft/windows_11_23h2 < 10.0.22631.5624
microsoft/windows_11_24h2 < 10.0.26100.4652
microsoft/windows_server_2008 (2 CPE variants)
microsoft/windows_server_2008 r2 sp1
... and 7 more
Published Jul 08, 2025
Tracked Since Feb 18, 2026