May 2022: Active Directory Domain Services Elevation of Privilege Vulnerability
CVE-2022-26923 Published on May 10, 2022

Active Directory Domain Services Elevation of Privilege Vulnerability
Active Directory Domain Services Elevation of Privilege Vulnerability

Vendor Advisory NVD

Known Exploited Vulnerability

This Microsoft Active Directory Domain Services Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. An authenticated user could manipulate attributes on computer accounts they own or manage, and acquire a certificate from Active Directory Certificate Services that would allow for privilege escalation to SYSTEM.

The following remediation steps are recommended / required by September 8, 2022: Apply updates per vendor instructions.

Weakness Type

Improper Certificate Validation

The software does not validate, or incorrectly validates, a certificate. When a certificate is invalid or malicious, it might allow an attacker to spoof a trusted entity by interfering in the communication path between the host and client. The software might connect to a malicious host while believing it is a trusted host, or the software might be deceived into accepting spoofed data that appears to originate from a trusted host.

Products Associated with CVE-2022-26923

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Microsoft Windows 10

Microsoft Windows Server 2012

Microsoft Windows Server 2016

Microsoft Windows 8.1

Microsoft Windows Server 2019

Microsoft Windows 11

Microsoft Windows Server 2022

Microsoft Windows Rt 8 1

Microsoft Windows 10 1909

Microsoft Windows 10 21h1

Microsoft Windows 10 1507

Microsoft Windows Server 20h2

Microsoft Windows Server 2012 R2

Affected Versions

Microsoft Windows 10 Version 1809:

Version 10.0.17763.0 and below 10.0.17763.4252 is affected.

Microsoft Windows 10 Version 1809:

Version 10.0.0 and below 10.0.17763.4252 is affected.

Microsoft Windows Server 2019:

Version 10.0.17763.0 and below 10.0.17763.4252 is affected.

Microsoft Windows Server 2019 (Server Core installation):

Version 10.0.17763.0 and below 10.0.17763.4252 is affected.

Microsoft Windows 10 Version 1909:

Version 10.0.0 and below 10.0.18363.2274 is affected.

Microsoft Windows 10 Version 21H1:

Version 10.0.0 and below 10.0.19043.1706 is affected.

Microsoft Windows Server 2022:

Version 10.0.20348.0 and below 10.0.20348.1668 is affected.

Microsoft Windows 10 Version 20H2:

Version 10.0.0 and below 10.0.19042.1706 is affected.

Microsoft Windows Server version 20H2:

Version 10.0.0 and below 10.0.19042.1706 is affected.

Microsoft Windows 11 version 21H2:

Version 10.0.0 and below 10.0.22000.1817 is affected.

Microsoft Windows 10 Version 21H2:

Version 10.0.19043.0 and below 10.0.19043.1706 is affected.

Microsoft Windows 10 Version 1507:

Version 10.0.10240.0 and below 10.0.10240.19297 is affected.

Microsoft Windows 10 Version 1607:

Version 10.0.14393.0 and below 10.0.14393.5850 is affected.

Microsoft Windows Server 2016:

Version 10.0.14393.0 and below 10.0.14393.5850 is affected.

Microsoft Windows Server 2016 (Server Core installation):

Version 10.0.14393.0 and below 10.0.14393.5850 is affected.

Microsoft Windows 8.1:

Version 6.3.0 and below 6.3.9600.20371 is affected.

Microsoft Windows Server 2012 R2:

Version 6.3.9600.0 and below 6.3.9600.20919 is affected.

Microsoft Windows Server 2012 R2 (Server Core installation):

Version 6.3.9600.0 and below 6.3.9600.20919 is affected.

Exploit Probability

EPSS

91.44%

Percentile

99.66%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.