What is CVE-2026-33838?

CVE-2026-33838 is a security advisory published by Microsoft Security Response Center (MSRC) with Elevation of Privilege severity. Windows Message Queuing (MSMQ) Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-33838 cover?

CVE-2026-33838 covers the following CVE IDs: CVE-2026-33838. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-33838?

CVE-2026-33838 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

CVE-2026-33838Elevation of PrivilegeCVSS 7.8

Windows Message Queuing (MSMQ) Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 22, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-33838 →

📋 Description

<p>Double free in Windows Message Queuing allows an authorized attacker to elevate privileges locally.</p>