CVE-2026-73664
Auth'd admin can add SSH key to asterisk user, enabling persistent shell access.
Is CVE-2026-73664 being exploited?
Not confirmed. CVE-2026-73664 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.65% probability of exploitation in the next 30 days.
How severe is CVE-2026-73664?
CVE-2026-73664 is rated High with a CVSS score of 8.6. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-73664?
Yes. A fix has been recorded for CVE-2026-73664. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73664 affect?
CVE-2026-73664 affects FreePBX 17 (>=17.0.5.34 and <17.0.11) - fixed in 17.0.11. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73664?
Update FreePBX to 17.0.11; audit /home/asterisk/.ssh/authorized_keys and rotate credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Auth'd admin can append an SSH key to asterisk's authorized_keys, granting persistent shell access to run commands, access/modify call data and system files.
Patch when possible
- affected>= 17.0.5.34 and < 17.0.11
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.