CVE-2026-26166

published 2026-04-14

CVE-2026-26166: Double free in Windows Shell allows an authorized attacker to elevate privileges locally.

high 7 CVSS 3.1

AV L AC H PR L UI N S U C H I H A H

Double free in Windows Shell allows an authorized attacker to elevate privileges locally.

Affected

14 ranges

Vendor	Product	Version range	Fixed in
microsoft	windows_11_23h2	< 10.0.22631.6936	10.0.22631.6936
microsoft	windows_11_24h2	< 10.0.26100.8246	10.0.26100.8246
microsoft	windows_11_25h2	< 10.0.26200.8246	10.0.26200.8246
microsoft	windows_11_26h1	< 10.0.28000.1836	10.0.28000.1836
microsoft	windows_11_version_22h3	>= 10.0.22631.0 < 10.0.22631.6936	10.0.22631.6936
microsoft	windows_11_version_23h2	>= 10.0.22631.0 < 10.0.22631.6936	10.0.22631.6936
microsoft	windows_11_version_24h2	>= 10.0.26100.0 < 10.0.26100.8246	10.0.26100.8246
microsoft	windows_11_version_25h2	>= 10.0.26200.0 < 10.0.26200.8246	10.0.26200.8246
microsoft	windows_11_version_26h1	>= 10.0.28000.0 < 10.0.28000.1836	10.0.28000.1836
microsoft	windows_server_2022	< 10.0.20348.5020	10.0.20348.5020
microsoft	windows_server_2022	>= 10.0.20348.0 < 10.0.20348.5020	10.0.20348.5020
microsoft	windows_server_2022_23h2	< 10.0.25398.2274	10.0.25398.2274
microsoft	windows_server_2025	< 10.0.26100.32690	10.0.26100.32690
microsoft	windows_server_2025	>= 10.0.26100.0 < 10.0.26100.32690	10.0.26100.32690

CWE-415