What is the severity of CVE-2021-26701?

CVE-2021-26701 has a CVSS Base Score of 8.1/10 and is classified as High severity. It is important to assess the risk based on your specific environment.

How do I fix CVE-2021-26701?

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-2021-26701

Disclosed

CVE-2021-26701

.NET Core Remote Code Execution Vulnerability

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Exploitation Probability (EPSS)

Low Priority

2.99%

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

Feb 25, 2021

Vulnerability Disclosed

Published to component-level vulnerability database.

Dec 29, 2023

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

9 Total

microsoft/.netAll Versions

microsoft/.net_coreAll Versions

microsoft/powershell_core7.0

microsoft/powershell_core7.1

microsoft/visual_studio_2019All Versions

References

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S2AZOUKMCHT2WBHR7MYDTYXWOBHZW5P5/Fedoraproject

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TW3ZSJTTMZAFKGW7NJWTVVFZUYYU2SJZ/Fedoraproject

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBOSSX7U6BSHV5RI74FCOW4ITJ5RRJR5/Fedoraproject

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WA5WQJVHUL5C4XMJTLY3C67R4WP35EF4/Fedoraproject

Am I Vulnerable?

Check your domain or package.json for CVE-2021-26701 exposure.

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Vulnerability Details

CVSS Base Score

8.1/ 10

Vector

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

Published Date

Feb 25, 2021

Last Modified

Dec 29, 2023

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