What’s Vulnerable › Vulnerabilities

CVE-2021-37461

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-25 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via /extensionsinstruction?id= (reflected).

Affected products

• Nchsoftware Axon Pbx: through 2.22

References

• https://github.com/0xfml/poc/blob/main/NCH/Axon_2.22_XSS.md
• https://www.nch.com.au/pbx/index.html
• https://github.com/0xfml/poc/blob/main/NCH/Axon_2.22_XSS.md
• https://www.nch.com.au/pbx/index.html

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