CVE-2021-37441: NCH Axon PBX v2.22 and earlier allows path traversal for file deletion via the logdelete?file=/.

Q: How do I fix CVE-2021-37441?

axon pbx: upgrade to newer than 2.22. Exact commands for each OS are on this page.

Q: Is CVE-2021-37441 being exploited?

CVE-2021-37441 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-37441 affect?

CVE-2021-37441 affects axon pbx. Severity is high (CVSS 8.8). NCH Axon PBX v2.22 and earlier allows path traversal for file deletion via the logdelete?file=/.. substring.

Q: How urgent is CVE-2021-37441?

Priority 54/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2021-37441 is a high-severity flaw (CVSS 8.8) affecting axon pbx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NCH Axon PBX v2.22 and earlier allows path traversal for file deletion via the logdelete?file=/.. substring.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.5% (top 26%)
CISA exploited list	No
Weakness	CWE-22
Published	2021-07-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nch

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-07-25 22:15 UTCPublished CVE record published
2026-06-17 04:00 UTCUpdated Record last modified

nch axon pbx UPGRADE

Affected: <= 2.22

Fixed in: newer than 2.22

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy axon-pbx || rpm -q axon-pbx || axon-pbx --version

2. UPGRADE to newer than 2.22 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade axon-pbx

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade axon-pbx

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-37441?

axon pbx: upgrade to newer than 2.22. Exact commands for each OS are on this page.

Is CVE-2021-37441 being exploited?

CVE-2021-37441 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-37441 affect?

CVE-2021-37441 affects axon pbx. Severity is high (CVSS 8.8). NCH Axon PBX v2.22 and earlier allows path traversal for file deletion via the logdelete?file=/.. substring.

How urgent is CVE-2021-37441?

Priority 54/100. High severity; Public exploit reference

Related CVEs

CVE-2021-37462 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via /ipblacklist?errorip= (reflected).
CVE-2021-37461 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via /extensionsinstruction?id= (reflected)
CVE-2021-37460 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via /planprop?id= (reflected).
CVE-2021-37459 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via the customer name field (stored).
CVE-2021-37458 MEDIUM 5.4 UPGRADE Cross Site Scripting (XSS) exists in NCH Axon PBX v2.22 and earlier via the primary phone field (stored).

References

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