CVE-2026-33101

Published: Apr 14, 2026Modified: Apr 17, 2026

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.

Affected (8)

Products: Microsoft: Windows 11 24h2, Windows 11 25h2, Windows 11 26h1, Windows Server 2022 23h2, Windows Server 2025

5 products

Windows 11 24h2

Windows 11 25h2

Windows 11 26h1

Windows Server 2022 23h2

Windows Server 2025

Configuration A

8 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 11 24h2	Before 10.0.26100.8246
Microsoft Windows 11 24h2	Before 10.0.26100.8246
Microsoft Windows 11 25h2	Before 10.0.26200.8246
Microsoft Windows 11 25h2	Before 10.0.26200.8246
Microsoft Windows 11 26h1	Before 10.0.28000.1836
Microsoft Windows 11 26h1	Before 10.0.28000.1836
Microsoft Windows Server 2022 23h2	Before 10.0.25398.2274
Microsoft Windows Server 2025	Before 10.0.26100.32690

Related CWEs

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33101

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.