⚠ Actively exploited in ransomware campaigns
This vulnerability is on the CISA Known Exploited Vulnerabilities list and has been used in known ransomware attacks. CISA required action: Apply updates per vendor instructions.. Due date: 2022-03-17.

CVE-2021-41379

CWE-59CWE-269 — Improper Privilege ManagementCWE-13869 documents8 sources
Severity
7.8HIGH
EPSS
1.2%
top 21.42%
CISA KEV
KEVRansomware
Added 2022-03-03
Due 2022-03-17
Exploit
Exploited in wild
Active exploitation observed
Affected products
37
Microsoft Windows 10 Version 1507Microsoft Windows 10 Version 1607Microsoft Windows 10 Version 1809+34 more
Timeline
PublishedNov 10
KEV addedMar 3
KEV dueMar 17
Latest updateMay 24
CISA Required Action: Apply updates per vendor instructions.

Description

Windows Installer Elevation of Privilege Vulnerability

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages35 packages

▶NVDmicrosoft/windows< 10.0.19041.1348+5
▶CVEListV5microsoft/windows_76.1.0 — 6.1.7601.25769
▶CVEListV5microsoft/windows_8.16.3.0 — 6.3.9600.20174
▶NVDmicrosoft/windows_10_1507< 10.0.10240.19119
▶NVDmicrosoft/windows_10_1607< 10.0.14393.4770

Patches

Patch: portal.msrc.microsoft.com ↗Patch: portal.msrc.microsoft.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-hxf7-qh53-96j5: Windows Installer Elevation of Privilege Vulnerability↗2022-05-24
▶
CVEList
Windows Installer Elevation of Privilege Vulnerability↗2021-11-10
▶
VulnCheck
Microsoft Windows Installer Privilege Escalation Vulnerability↗2021
▶

🔍Detection Rules

1
Elastic
Potential Privilege Escalation via InstallerFileTakeOver↗
▶

📋Vendor Advisories

2
CISA
Microsoft Windows Installer Privilege Escalation Vulnerability↗2022-03-03
▶
Microsoft
Windows Installer Elevation of Privilege Vulnerability↗2021-11-09
▶

🕵️Threat Intelligence

2
Talos
Attackers exploiting zero-day vulnerability in Windows Installer — Here’s what you need to know and Talos’ coverage↗2021-11-23
▶
Talos
Attackers exploiting zero-day vulnerability in Windows Installer — Here’s what you need to know and Talos’ coverage↗2021-11-23
▶
CVE-2021-41379 (HIGH CVSS 7.8) | Windows Installer Elevation of Priv | cvebase.io