CVE-2026-73664

FreePBX: Authenticated Arbitrary SSH Key Injection via Backup Module

Published: Aug 13, 2026Updated: Sep 18, 2026 Sources: CVE List NVDCWE-269

N/ACVSS

NVD MITRE

Description

FreePBX is an open source IP PBX. From 17.0.5.34 until 17.0.11, the publicKeySave AJAX endpoint in Backup.class.php accepts an authenticated administrator's SSH public key and appends it to /home/asterisk/.ssh/authorized_keys for the asterisk system user without reliably enforcing backup-only command and source restrictions. The key grants persistent shell access that can execute arbitrary commands, access FreePBX and call data, modify system files, and disrupt services. This issue is fixed in version 17.0.11.

No summary for this CVE yet.

Weaknesses

CWE-269 CWE-284 CWE-732

Affected Products

FreePBX

oss-projectaka endpoint, security-reporting

backupOn-prem

Communications / voip-telephony

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Privilege Escalation

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References

https://github.com/FreePBX/security-reporting/security/advisories/GHSA-24w6-hpg3-rwfg

github.com

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