CVEvulnerability

CVE-2021-41379

5.5 MEDIUM Known exploited Published 2021-11-10 Modified 2026-08-19 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Windows Installer Privilege Escalation Vulnerability — Microsoft Windows

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

Added to KEV: 2022-03-03
Remediation due: 2022-03-17
Ransomware use: Known
Required action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-41379

Status: Analyzed
Published: 2021-11-10
Last modified: 2026-08-19
Assigner: [email protected]
CVSS 3.1 ([email protected]): 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected]): 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected]): 4.6 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:P
Weaknesses: CWE-59

Description

Windows Installer Elevation of Privilege Vulnerability

Affected configurations

• microsoft windows 10 1507 (< 10.0.10240.19119) • microsoft windows 10 1607 (< 10.0.14393.4770) • microsoft windows 10 1809 (< 10.0.17763.2300) • microsoft windows 10 1909 (< 10.0.18363.1916) • microsoft windows 10 2004 (< 10.0.19041.1348) • microsoft windows 10 20h2 (< 10.0.19042.1348) • microsoft windows 10 21h1 (< 10.0.19043.1348) • microsoft windows 11 21h2 (< 10.0.22000.318) • microsoft windows 7 • microsoft windows 8.1 • microsoft windows rt 8.1 • microsoft windows server 2004 (< 10.0.19041.1348) • microsoft windows server 2008 • microsoft windows server 2008 r2 • microsoft windows server 2012 • microsoft windows server 2012 r2 • microsoft windows server 2016 (< 10.0.14393.4770) • microsoft windows server 2019 (< 10.0.17763.2300) • microsoft windows server 2022 (< 10.0.20348.350) • microsoft windows server 20h2 (< 10.0.19042.1348)

Weakness · CWE (1)

CWE-59 Improper Link Resolution Before File Access weakness

References