VulnerabilityReceived

CVE-2026-73664

The key grants persistent shell access that can execute arbitrary commands, access FreePBX and call data, modify system files, and disrupt services.

HIGH 8.6EPSS 0.65%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.65%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 4.0: 8.6 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.65% probability · 49th percentile
CISA KEV: Not listed
Weakness: CWE-269, CWE-284, CWE-732
Source: security-advisories@github.com

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.