CVE-2021-37458

Name: CVE-2021-37458
Creator: NVD / NIST
Published: 2021-07-25T21:15:08.047+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2021-37458 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via the primary phone field (stored).. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via the primary phone field (stored).

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.62%

45.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Nchsoftware	Axon Pbx	<= 2.22

References

https://github.com/0xfml/poc/blob/main/NCH/Axon_2.22_XSS.mdExploit, Third Party Advisory
https://www.nch.com.au/pbx/index.htmlProduct
https://github.com/0xfml/poc/blob/main/NCH/Axon_2.22_XSS.mdExploit, Third Party Advisory
https://www.nch.com.au/pbx/index.htmlProduct

Timeline

Published: Jul 25, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37458?

Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via the primary phone field (stored).

How severe is CVE-2021-37458?

CVE-2021-37458 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37458?

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-2021-37458?

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

Scan your code now

Source: NVD / NIST