CVE-2023-21694 Windows Fax Service Remote Code Execution Vulnerability

Medium 6.8 Published Updated

An attacker can execute arbitrary code remotely by exploiting a heap-based buffer overflow in the Windows Fax Service.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-21694?

CVE-2023-21694 is a medium-severity memory corruption vulnerability in Microsoft Windows 10, published on 14 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Windows Fax Service Remote Code Execution Vulnerability

Weakness: CWE-122

Which versions are affected by CVE-2023-21694?

It affects 13 products.

Products include Microsoft Windows 10, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 20h2, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2 and 7 more.

How do I fix CVE-2023-21694?

No fix has been published for CVE-2023-21694 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-21694 being exploited?

There is no known exploitation of CVE-2023-21694 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-mxr9-fqjp-9x45.

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