CVE-2021-40146

Name: CVE-2021-40146
Creator: NVD / NIST
Published: 2021-09-11T11:15:14.887+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 5.50%

Last modified Jun 17, 2026

CVE-2021-40146 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A Remote Code Execution (RCE) vulnerability was discovered in the Any23 YAMLExtractor.java file and is known to affect Any23 versions < 2.5. RCE vulnerabilities allow a malicious actor to execute any code of their choice on a remote machine over LAN, WAN, or internet. EPSS estimates a 5.50% chance of exploitation in the next 30 days.

Description

A Remote Code Execution (RCE) vulnerability was discovered in the Any23 YAMLExtractor.java file and is known to affect Any23 versions < 2.5. RCE vulnerabilities allow a malicious actor to execute any code of their choice on a remote machine over LAN, WAN, or internet. RCE belongs to the broader class of arbitrary code execution (ACE) vulnerabilities.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

5.50%

91.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apache	Any23	< 2.5

References

http://www.openwall.com/lists/oss-security/2021/09/11/2Mailing List, Third Party Advisory
https://lists.apache.org/thread.html/r7c521ed85c7ae1bad4fdf95b459f2aaa8a67eae338636b7b7ec35d86%40%3Cannounce.apache.org%3EMailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/09/11/2Mailing List, Third Party Advisory
https://lists.apache.org/thread.html/r7c521ed85c7ae1bad4fdf95b459f2aaa8a67eae338636b7b7ec35d86%40%3Cannounce.apache.org%3EMailing List, Vendor Advisory

Timeline

Published: Sep 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40146?

How severe is CVE-2021-40146?

CVE-2021-40146 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.50% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40146?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40146?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST