CVE-2021-31958 Windows NTLM Elevation of Privilege Vulnerability

High 7.5 Published Updated

An attacker can exploit a flaw in Windows NTLM to elevate privileges on affected Microsoft Windows systems.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2021-31958?

CVE-2021-31958 is a high-severity vulnerability in Microsoft Windows 10, published on 8 Jun 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Windows NTLM Elevation of Privilege Vulnerability

Weakness: CWE-294

Which versions are affected by CVE-2021-31958?

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-2021-31958?

No fix has been published for CVE-2021-31958 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-31958 being exploited?

There is no known exploitation of CVE-2021-31958 in the wild and no public exploit code.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-2c92-7r7g-hm5v.

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