critical
9.8
Advisory Published
Updated

CVE-2021-31962: Kerberos AppContainer Security Feature Bypass Vulnerability

First published: Tue Jun 08 2021(Updated: )

Kerberos AppContainer Security Feature Bypass Vulnerability

Credit: secure@microsoft.com secure@microsoft.com

Affected SoftwareAffected VersionHow to fix
Microsoft Windows 10
Microsoft Windows 10=20h2
Microsoft Windows 10=21h1
Microsoft Windows 10=1607
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows RT
Microsoft Windows Server 2008 Itanium=r2-sp1
Microsoft Windows Server 2008 Itanium=sp2
Microsoft Windows Server 2012 x64
Microsoft Windows Server 2012 x64=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2016=20h2
Microsoft Windows Server 2016=2004
Microsoft Windows Server 2019

Remedy

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31962

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-31962?

    CVE-2021-31962 is a Kerberos AppContainer Security Feature Bypass vulnerability.

  • How severe is CVE-2021-31962?

    CVE-2021-31962 has a severity rating of 9.4 (Critical).

  • Which software is affected by CVE-2021-31962?

    CVE-2021-31962 affects Microsoft Windows 10 (all versions), Windows 7 (SP1), Windows 8.1, Windows RT 8.1, Windows Server 2008 (all versions), Windows Server 2012 (all versions), Windows Server 2016 (all versions), and Windows Server 2019.

  • How can I fix CVE-2021-31962?

    To fix CVE-2021-31962, users should apply the security patch provided by Microsoft.

  • Where can I find more information about CVE-2021-31962?

    More information about CVE-2021-31962 can be found on the following websites: [packetstormsecurity.com](http://packetstormsecurity.com/files/163206/Windows-Kerberos-AppContainer-Enterprise-Authentication-Capability-Bypass.html) and [portal.msrc.microsoft.com](https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31962).

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