CVE-2021-37455: Nchsoftware Axon Pbx

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via the outbound dialing plan (stored).

Affected products

• Nchsoftware Axon Pbx: up to and including 2.22

Published 2021-07-25. Last modified 2026-06-17.