CVE-2021-41379

Published: Nov 10, 2021Modified: Jun 17, 2026CISA KEV

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: NVD (Secondary)

Description

Windows Installer Elevation of Privilege Vulnerability

Affected (20)

Products: Microsoft: Windows 10 1507, Windows 10 1607, Windows 10 1809, Windows 10 1909, Windows 10 2004, Windows 10 20h2, Windows 10 21h1, Windows 11 21h2, Windows 7, Windows 8.1, Windows Rt 8.1, Windows Server 2004, Windows Server 2008, Windows Server 2012, Windows Server 2016, Windows Server 2019, Windows Server 2022, Windows Server 20h2

18 products

Windows 10 1507

Windows 10 1607

Windows 10 1809

Windows 10 1909

Windows 10 2004

Windows 10 20h2

Windows 10 21h1

Windows 11 21h2

Windows Server 2004

Windows Server 2008

Windows Server 2012

Windows Server 2016

Windows Server 2019

Windows Server 2022

Windows Server 20h2

Configuration A

20 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 1507	Before 10.0.10240.19119
Microsoft Windows 10 1607	Before 10.0.14393.4770
Microsoft Windows 10 1809	Before 10.0.17763.2300
Microsoft Windows 10 1909	Before 10.0.18363.1916
Microsoft Windows 10 2004	Before 10.0.19041.1348
Microsoft Windows 10 20h2	Before 10.0.19042.1348
Microsoft Windows 10 21h1	Before 10.0.19043.1348
Microsoft Windows 11 21h2	Before 10.0.22000.318
Microsoft Windows 7	All versions
Microsoft Windows 8.1	All versions
Microsoft Windows Rt 8.1	All versions
Microsoft Windows Server 2004	Before 10.0.19041.1348
Microsoft Windows Server 2008	All versions
Microsoft Windows Server 2008	Version r2 sp1
Microsoft Windows Server 2012	All versions
Microsoft Windows Server 2012	Version r2
Microsoft Windows Server 2016	Before 10.0.14393.4770
Microsoft Windows Server 2019	Before 10.0.17763.2300
Microsoft Windows Server 2022	Before 10.0.20348.350
Microsoft Windows Server 20h2	Before 10.0.19042.1348

Related CWEs

Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

References (5)

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41379

Source: secure@microsoft.com

PatchVendor Advisory

https://www.zerodayinitiative.com/advisories/ZDI-21-1308/

Source: secure@microsoft.com

Third Party AdvisoryVDB Entry

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41379

Source: af854a3a-2127-422b-91ae-364da2661108

PatchVendor Advisory

https://www.zerodayinitiative.com/advisories/ZDI-21-1308/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party AdvisoryVDB Entry

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-41379

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

Timeline

No history available yet.