Main Vulnerability Database Vulnerabilities #VU126121

Use-after-free in Microsoft Windows and Windows Server - CVE-2026-33101

Published: April 15, 2026

Vulnerability identifier: #VU126121

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-33101

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Print Spooler. A local user can gain elevated privileges on the target system.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2026-33101

Install updates from vendor's website.

Microsoft Windows - addressed in versions 11 24H2 10.0.26100.32690, 11 25H2 10.0.26200.8246, 11 26H1 10.0.28000.1836
Windows Server - addressed in versions 2012 R2 6.3.9600.23132, 2022 23H2 10.0.25398.2274, 2025 10.0.26100.32690

External References

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

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