CVE-2022-26923

Microsoft Active Directory: Domain Services Privilege Escalation

As of , CVE-2022-26923 in Microsoft Active Directory is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 18 August 2022
US federal deadline
8 September 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.84Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.02 on 18 August 2022EPSS on the day CISA listed it.
Public exploit
1 Metasploit module
Fix
Vendor advice: msrc.microsoft.comLinks below, from CISA's entry.

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

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.

CISA's description

Active Directory Domain Services Elevation of Privilege Vulnerability

The CVE record's description, from microsoft

CVE published
10 May 2022
Assigned by
microsoft
CVSS
8.8 High (CVSS 3.1, from the CNA)
CWE-295
Improper Certificate Validation
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

  • Metasploit: Active Directory Certificate Services (ADCS) privilege escalation (Certifried)auxiliary module, rank normal

Active Directory: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2021-42278Domain Services Privilege EscalationMicrosoft Active DirectoryPatch this weekRansomware use; EPSS 0.730.73
CVE-2021-42287Domain Services Privilege EscalationMicrosoft Active DirectoryPatch this weekRansomware use; EPSS 0.770.77

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