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CVE-2021-45490

9.1 · CRITICAL

The client applications in 3CX on Windows, the 3CX app for iOS, and the 3CX application for Android through 2022-03-17 lack SSL certificate validation.

Published Mar 28, 2022CWE-295EPSS 1.09%

Overview

CVE-2021-45490 is a critical-severity vulnerability. It was published on March 28, 2022 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The client applications in 3CX on Windows, the 3CX app for iOS, and the 3CX application for Android through 2022-03-17 lack SSL certificate validation.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpacketstormsecurity.com/files/166376/3CX-Client-Missing-TLS-Validation.htmlRefwww.3cx.com/community/forums/posts-articles-news/Refpacketstormsecurity.com/files/166376/3CX-Client-Missing-TLS-Validation.htmlRefwww.3cx.com/community/forums/posts-articles-news/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-45490?

CVE-2021-45490 is a critical-severity vulnerability. It was published on March 28, 2022 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2021-45490?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-45490?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-45490?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-45490 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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