CVE-2021-45490: 3cx

Critical severity, CVSS 9.1. EPSS: 1.1% chance of exploitation in the next 30 days.

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.

Affected products

• 3cx 3cx: up to and including 18.0.4; up to and including 18.0.11; up to and including 2022-03-17

Published 2022-03-28. Last modified 2026-06-17.