CSIRTS // UNIFIED SECURITY ADVISORY FEEDSYS ● ONLINE · POWERED BY INTELFUSIONS.COM

← Back to feed

CVE-2026-50447: Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability

criticalCVSS 9.8CVE-2026-50447
Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over a network.

CSIRTS triage

vendor: Microsoftproduct: Windows Message Queuing ServiceRemote code execution
What
Heap-based buffer overflow in Windows Message Queuing allows an unauthorized attacker to execute code over a network.
Who is affected
Deployments of Windows Message Queuing Service.
Urgency
Remediation is urgent due to the critical severity and potential for remote code execution.
Action
Apply the latest security patch for Windows Message Queuing Service.

AI-assisted analysis generated from the source advisory — verify against the original.

⚡ Watch Windows Message Queuing Service

Get an email when a new Windows Message Queuing Service advisory drops — max one per day, one-click unsubscribe.

Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
critical — CVSS 9.8
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50447

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-50447coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Windows Message Queuing

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center