CVE-2022-26923: Microsoft Active Directory Domain Services Privilege Escalation Vulnerability

CVE-2022-26923 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2022-08-18

An authenticated user can manipulate attributes on computer accounts they own or manage to acquire a certificate from Active Directory Certificate Services. This flaw allows for privilege escalation to SYSTEM by exploiting improper certificate validation in Active Directory Domain Services.

Technologies: Microsoft Active Directory. Vendors: Microsoft.

Quick answers

Is CVE-2022-26923 exploited in the wild?
Yes. CVE-2022-26923 is known to be exploited in the wild, first recorded on 18 August 2022. Treat it as urgent.
How severe is CVE-2022-26923?
Critical severity, with a CVSS score of 8.8, published 18 August 2022.
Which products and versions are affected?
Microsoft Windows 10 up to (excluding) 10.0.10240.19297; Microsoft Windows 11 up to (excluding) 10.0.22000.1817; Microsoft Windows Server 2012 R2; Microsoft Windows Server 2016 up to (excluding) 10.0.14393.5850; and 2 more.
Is there a fix for CVE-2022-26923?
A patch was published on 2022-08-18: Patch information provided by Microsoft Corporation Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2022-26923 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2022-26923?
Check whether you run Microsoft Active Directory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Windows 10 up to (excluding) 10.0.10240.19297
  • Microsoft Windows 11 up to (excluding) 10.0.22000.1817
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016 up to (excluding) 10.0.14393.5850
  • Microsoft Windows Server 2019 up to (excluding) 10.0.17763.4252
  • Microsoft Windows Server 2022 up to (excluding) 10.0.20348.1668

Timeline

  • 2022-08-18: disclosed
  • 2022-08-18: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-08-18: patched: Patch information provided by Microsoft Corporation

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