CVE-2026-26166 — Double Free in Microsoft Windows 11 Version 22h3

CWE-415 — Double Free3 documents3 sources
Severity
7.0HIGHNVD
EPSS
0.1%
top 82.91%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
7
Microsoft Windows 11 Version 22h3Microsoft Windows 11 Version 23h2Microsoft Windows 11 Version 24h2+4 more
Timeline
PublishedApr 14

Description

Double free in Windows Shell 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 Packages7 packages

▶CVEListV5microsoft/windows_server_202210.0.20348.0 — 10.0.20348.5020
▶CVEListV5microsoft/windows_server_202510.0.26100.0 — 10.0.26100.32690
▶CVEListV5microsoft/windows_11_version_22h310.0.22631.0 — 10.0.22631.6936
▶CVEListV5microsoft/windows_11_version_23h210.0.22631.0 — 10.0.22631.6936
▶CVEListV5microsoft/windows_11_version_24h210.0.26100.0 — 10.0.26100.8246

🔴Vulnerability Details

2
GHSA
GHSA-6hvh-5rrp-396c: Double free in Windows Shell allows an authorized attacker to elevate privileges locally↗2026-04-14
▶
CVEList
Windows Shell Elevation of Privilege Vulnerability↗2026-04-14
▶
CVE-2026-26166 — Double Free in Microsoft | cvebase