CVE-2021-1722 Windows Fax Service Remote Code Execution Vulnerability

High 8.1 Published Updated

An attacker can execute arbitrary code remotely via the Windows Fax Service, requiring immediate patching for all affected Windows versions.

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-2021-1722?

CVE-2021-1722 is a high-severity code injection vulnerability in Microsoft Windows 10, published on 25 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Windows Fax Service Remote Code Execution Vulnerability

Which versions are affected by CVE-2021-1722?

It affects 8 products.

Products include Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2008, Microsoft Windows Server 2012 and 2 more.

How do I fix CVE-2021-1722?

No fix has been published for CVE-2021-1722 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2021-1722 being exploited?

There is no known exploitation of CVE-2021-1722 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-9pqr-g6m6-mhm5.

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