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CVE-2026-54992

Microsoft Message Queuing Queue Manager Remote Code Execution Vulnerability

Published: Jul 14, 2026Updated: Jul 15, 2026 Sources: CVE List NVDCWE-122

Description

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

In plain language

AI Act now

This is a Windows Message Queuing Queue Manager flaw that can let someone run code on your machine if they already have local access; most small businesses won’t be hit unless an attacker gets onto a device first.

Executive summary

CVE-2026-54992 is a local heap-based buffer overflow in Microsoft Message Queuing Queue Manager that can allow arbitrary code execution by an attacker with local access and no need for authentication or user interaction.

If affected, business impact
Full device takeoverMalware installationRansomware staging riskService disruption

What to do now

  1. Check whether the affected Windows Message Queuing Queue Manager component is installed/enabled on your devices (especially servers).
  2. Identify your current Windows build/version.
  3. Update each affected system to the fixed version listed below:
    • Windows 10: 10.0.14393.9339 or 10.0.17763.9020 or 10.0.19044.7548 or 10.0.19045.7548
    • Windows 11: 10.0.26100.8875 or 10.0.26200.8875 or 10.0.28000.2525
    • Windows Server 2012: 6.2.9200.26226
    • Windows Server 2012 R2: 6.3.9600.23291
    • Windows Server 2016: 10.0.14393.9339
    • Windows Server 2019: 10.0.17763.9020
    • Windows Server 2022: 10.0.20348.5386
  4. If you can’t update immediately, restrict who can get local access to those machines (tighter admin access, remove unnecessary accounts, and reduce chances of an attacker landing on the host).
Usually a quick update

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

Affected Products

and 10 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

4

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