CVE-2026-33100 — Use After Free in Microsoft Windows 10 Version 1607

CWE-416 — Use After Free4 documents4 sources
Severity
7.0HIGHNVD
EPSS
0.0%
top 87.84%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
15
Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809Microsoft Windows 10 Version 21h2+12 more
Timeline
PublishedApr 14

Description

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.0 | Impact: 5.9

Affected Packages15 packages

▶CVEListV5microsoft/windows_server_20126.2.9200.0 — 6.2.9200.26026
▶CVEListV5microsoft/windows_server_201610.0.14393.0 — 10.0.14393.9060
▶CVEListV5microsoft/windows_server_201910.0.17763.0 — 10.0.17763.8644
▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.5020
▶CVEListV5microsoft/windows_server_202510.0.26100.0 — 10.0.26100.32690

🔴Vulnerability Details

3
CVEList
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability↗2026-04-14
▶
VulDB
Microsoft Windows up to Server 2025 Ancillary Function Driver for WinSock use after free↗2026-04-14
▶
GHSA
GHSA-gjhf-vqgr-hxwj: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally↗2026-04-14
▶