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CVE-2021-41379

Windows Installer Elevation of Privilege Vulnerability

Basic Information

CVE State
PUBLISHED
Reserved Date
September 17, 2021
Published Date
November 10, 2021
Last Updated
February 04, 2025
Vendor
Microsoft
Product
Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows 10 Version 21H1, Windows Server 2022, Windows 10 Version 2004, Windows Server version 2004, Windows 10 Version 20H2, Windows Server version 20H2, Windows 11 version 21H2, Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows 7, Windows 7 Service Pack 1, Windows 8.1, Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)
Description
Windows Installer Elevation of Privilege Vulnerability
Tags
windows cisa malware ransomware microsoft

CVSS Scores

CVSS v3.1

5.5 - MEDIUM

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

SSVC Information

Exploitation
active
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2022-03-03 00:00:00 UTC) Source
Used in Malware
Yes (added 2022-03-03 00:00:00 UTC) Source

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41379 https://www.zerodayinitiative.com/advisories/ZDI-21-1308/

Known Exploited Vulnerability Information

Source Added Date
CISA 2022-03-03 00:00:00 UTC

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Exploit Used in Malware

  • Added to KEVIntel