March 3, 2022 · Applied Cybernetics Group
CVE-2021-41379 — Microsoft Windows
known ransomware use
Microsoft Windows Installer Privilege Escalation Vulnerability
- Added to KEV
2022-03-03- Federal due date
2022-03-17- Vendor
- Microsoft
- Product
- Windows
- EPSS
- 97.3th percentile (score 0.195, as of
2026-10-04) - NVD CVSS v3.1
- 5.5 (MEDIUM)
- Ransomware use
- Known
- ATT&CK
- T1068 , T1078 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-41379
CISA short description
Microsoft Windows Installer contains an unspecified vulnerability that allows for privilege escalation.
Required action
Apply updates per vendor instructions.
NVD description
Windows Installer Elevation of Privilege Vulnerability