CVE-2025-50177 Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability

High 8.1 Published Updated

An unauthorized attacker can execute code over the network via a use-after-free flaw in Windows Message Queuing.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2025-50177?

CVE-2025-50177 is a high-severity use after free vulnerability in Microsoft Windows 10 1507, published on 12 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.

Weakness: CWE-416, CWE-362

Which versions are affected by CVE-2025-50177?

It affects 15 products.

Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 22h2 and 9 more.

How do I fix CVE-2025-50177?

No fix has been published for CVE-2025-50177 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2025-50177 being exploited?

There is no known exploitation of CVE-2025-50177 in the wild and no public exploit code.

All Microsoft Windows 10 1507 vulnerabilities

Sources

Also known as GHSA-rr6r-3q3m-7wwx.

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