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CVE-2026-54992

HighPublished

Microsoft Message Queuing Queue Manager Remote Code Execution Vulnerability

Published: Jul 14, 2026
Updated: Sep 17, 2026
Assigning CNA: microsoft
Evidence observed: Aug 17, 2026

Primary CVSS

8.4/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 27.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code locally.

Sources

CVE-2026-54992-PoCPoC
Proof of concept for CVE-2026-54992, an MSMQ remote-read integer overflow

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