What is the severity of CVE-2021-31199?

CVE-2021-31199 has a CVSS Base Score of 5.2/10 and is classified as Medium severity. It is important to assess the risk based on your specific environment.

How do I fix CVE-2021-31199?

Remediation typically involves updating the affected software products to the latest patched version. Refer to the 'Affected Products' and 'Remediation' sections on this page for specific mitigation steps and vendor advisories.

Home→Vulnerabilities→CVE-2021-31199

Active Exploitation

CVE-2021-31199

Microsoft Enhanced Cryptographic Provider 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

0.98%

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

2 events

Jun 8, 2021

Vulnerability Disclosed

Published to component-level vulnerability database.

Mar 7, 2025

Last Updated

Record updated with new analysis or tags.

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

18 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-2021-31199Microsoft

PatchVendor Advisory

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31199Microsoft

PatchVendor Advisory

Am I Vulnerable?

Check your domain or package.json for CVE-2021-31199 exposure.

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Vulnerability Details

CVSS Base Score

5.2/ 10

Vector

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

Published Date

Jun 8, 2021

Last Modified

Mar 7, 2025

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