All vulnerabilities
CVE-2021-41379

Microsoft Windows Installer Privilege Escalation Vulnerability

Microsoft WindowsOperating systems
Open in ThreatlineRecord JSON
CVSS
5.5Medium
ExploitationExploited in the wildAdded to KEV 3 Mar 2022. Known ransomware useCISA KEV
Exploit odds (EPSS)19.5%Chance of exploitation activity in the next 30 days, higher than 97% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.0.10240.19119Also 10.0.14393.4770, 10.0.17763.2300 and 10 moreCVE List
Federal deadline17 Mar 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

  • 10.0.10240.19119Windows 10 Version 1507CVE List
  • 10.0.14393.4770Windows 10 Version 1607CVE List
  • 10.0.17763.2300Windows 10 Version 1809CVE List
  • 10.0.18363.1916Windows 10 Version 1909CVE List
  • 10.0.19041.1348Windows 10 Version 2004CVE List
  • 10.0.19042.1348Windows 10 Version 20H2CVE List
Show all 26 fixed versions
  • 10.0.19043.1348Windows 10 Version 21H1CVE List
  • 10.0.22000.318Windows 11 version 21H2CVE List
  • 6.1.7601.25769Windows 7CVE List
  • 6.1.7601.25769Windows 7 Service Pack 1CVE List
  • 6.3.9600.20174Windows 8.1CVE List
  • 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
  • 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
  • 10.0.19042.1348Windows 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, 00:46 UTCPublishedCVE List
  2. 3 Mar 2022Added to CISA KEVCISA KEV

Description

Microsoft Windows Installer contains an unspecified vulnerability that allows for privilege escalation.

Text from CVE List

Affected versions 27

  • Windows 10 Version 1507affected: 10.0.10240.0 before 10.0.10240.19119CVE List
  • Windows 10 Version 1607affected: 10.0.14393.0 before 10.0.14393.4770CVE List
  • Windows 10 Version 1809affected: 10.0.17763.0 before 10.0.17763.2300CVE List
  • Windows 10 Version 1809affected: 10.0.0 before 10.0.17763.2300CVE List
  • Windows 10 Version 1909affected: 10.0.0 before 10.0.18363.1916CVE List
  • Windows 10 Version 2004affected: 10.0.0 before 10.0.19041.1348CVE List
  • Windows 10 Version 20H2affected: 10.0.0 before 10.0.19042.1348CVE List
  • Windows 10 Version 21H1affected: 10.0.0 before 10.0.19043.1348CVE List
  • Windows 11 version 21H2affected: 10.0.22000.0 before 10.0.22000.318CVE List
  • Windows 7affected: 6.1.0 before 6.1.7601.25769CVE List
  • Windows 7 Service Pack 1affected: 6.1.0 before 6.1.7601.25769CVE List
  • Windows 8.1affected: 6.3.0 before 6.3.9600.20174CVE List
  • 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 10.0.19042.1348CVE List

References 5