CVE-2019-0719 Code injection in Windows

Critical 9.1 Published Updated

An authenticated guest user can execute arbitrary code on the Hyper-V host server due to improper input validation in the network switch.

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

What is CVE-2019-0719?

CVE-2019-0719 is a critical code injection vulnerability in Microsoft Windows 10, published on 12 Nov 2019. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A remote code execution vulnerability exists when Windows Hyper-V Network Switch on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-0721.

Weakness: CWE-20

Which versions are affected by CVE-2019-0719?

It affects 7 products.

Products include Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016 and 1 more.

How do I fix CVE-2019-0719?

No fix has been published for CVE-2019-0719 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-2019-0719 being exploited?

There is no known exploitation of CVE-2019-0719 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-c9x8-4v35-37qf.

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