All vulnerabilities
CVE-2021-42287

Microsoft Active Directory Domain Services Privilege Escalation Vulnerability

Microsoft Active DirectoryIdentity & access
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationExploited in the wildAdded to KEV 11 Apr 2022. Known ransomware useCISA KEV
Exploit odds (EPSS)77.2%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in6.1.7601.25769Also 6.0.6003.21282, 6.2.9200.23517 and 5 moreCVE List
Federal deadline2 May 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

  • 6.1.7601.25769Windows Server 2008 R2 Service Pack 1CVE List
  • 6.1.7601.25769Windows Server 2008 R2 Service Pack 1 (Server Core installation)CVE List
  • 6.0.6003.21282Windows Server 2008 Service Pack 2CVE List
  • 6.0.6003.21282Windows Server 2008 Service Pack 2 (Server Core installation)CVE List
  • 6.2.9200.23517Windows Server 2012CVE List
  • 6.2.9200.23517Windows Server 2012 (Server Core installation)CVE List
Show all 15 fixed versions
  • 6.3.9600.20174Windows Server 2012 R2CVE List
  • 6.3.9600.20174Windows Server 2012 R2 (Server Core installation)CVE List
  • 10.0.14393.4770Windows Server 2016CVE List
  • 10.0.14393.4770Windows Server 2016 (Server Core installation)CVE List
  • 10.0.17763.2300Windows Server 2019CVE List
  • 10.0.17763.2300Windows Server 2019 (Server Core installation)CVE List
  • 10.0.20348.350Windows Server 2022CVE List
  • 10.0.19041.1348Windows Server version 2004CVE List
  • 10.0.19041.1348Windows Server version 20H2CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 10 Nov 2021, 00:47 UTCPublishedCVE List
  2. 11 Apr 2022Added to CISA KEVCISA KEV

Description

Microsoft Active Directory Domain Services contains an unspecified vulnerability that allows for privilege escalation.

Text from CVE List

Affected versions 15

  • Windows Server 2008 R2 Service Pack 1affected: 6.1.7601.0 before 6.1.7601.25769CVE List
  • Windows Server 2008 R2 Service Pack 1 (Server Core installation)affected: 6.1.7601.0 before 6.1.7601.25769CVE List
  • Windows Server 2008 Service Pack 2affected: 6.0.6003.0 before 6.0.6003.21282CVE List
  • Windows Server 2008 Service Pack 2 (Server Core installation)affected: 6.0.6003.0 before 6.0.6003.21282CVE List
  • Windows Server 2012affected: 6.2.9200.0 before 6.2.9200.23517CVE List
  • Windows Server 2012 (Server Core installation)affected: 6.2.9200.0 before 6.2.9200.23517CVE List
  • Windows Server 2012 R2affected: 6.3.9600.0 before 6.3.9600.20174CVE List
  • Windows Server 2012 R2 (Server Core installation)affected: 6.3.9600.0 before 6.3.9600.20174CVE List
  • Windows Server 2016affected: 10.0.14393.0 before 10.0.14393.4770CVE List
  • Windows Server 2016 (Server Core installation)affected: 10.0.14393.0 before 10.0.14393.4770CVE List
  • Windows Server 2019affected: 10.0.17763.0 before 10.0.17763.2300CVE List
  • Windows Server 2019 (Server Core installation)affected: 10.0.17763.0 before 10.0.17763.2300CVE List
  • Windows Server 2022affected: 10.0.20348.0 before 10.0.20348.350CVE List
  • Windows Server version 2004affected: 10.0.0 before 10.0.19041.1348CVE List
  • Windows Server version 20H2affected: 10.0.0 before 10.0.19041.1348CVE List

References 4