Home→Vulnerabilities→CVE-2021-41379
Active Exploitation

CVE-2021-41379

Windows Installer Elevation of Privilege Vulnerability

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Confirmed Active Exploitation

This vulnerability is listed in the CISA KEV Catalog. Federal agencies are mandated to patch immediately. Immediate remediation is required.

Exploitation Probability (EPSS)

Low Priority
1.16%

The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.

0% (Theoretical)100% (Certainty)

7-Day Exploitation Trend

Vulnerability Timeline

4 events
Nov 10, 2021
Vulnerability Disclosed
Published to component-level vulnerability database.
Feb 24, 2025
Last Updated
Record updated with new analysis or tags.
Nov 19, 2025
EPSS Score Increased
Daily EPSS score increased by 0.302 on 2023-12-30
Nov 22, 2025
EPSS Score Decreased
Daily EPSS score decreased by 0.302 on 2023-12-30

Threat Actor Attribution

PREMIUM INTEL
Associated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes

Remediation & Mitigation

SOLUTION

Official patches and mitigation steps are available for this vulnerability.

# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name

Affected Products

20 Total
microsoft/windows_10_1507All Versions
microsoft/windows_10_1607All Versions
microsoft/windows_10_1809All Versions
microsoft/windows_10_1909All Versions
microsoft/windows_10_2004All Versions

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41379Microsoft
PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1308/Zerodayinitiative
Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-41379Microsoft
PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1308/Zerodayinitiative
Third Party AdvisoryVDB Entry

Am I Vulnerable?

Check your domain or package.json for CVE-2021-41379 exposure.

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Vulnerability Details

CVSS Base Score
5.5/ 10
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published Date
Nov 10, 2021
Last Modified
Feb 24, 2025
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