CVE-2026-73663
Unauthenticated SQL injection in FreePBX missedcall module enables admin takeover.
Is CVE-2026-73663 being exploited?
Not confirmed. CVE-2026-73663 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 0.95% probability of exploitation in the next 30 days.
How severe is CVE-2026-73663?
CVE-2026-73663 is rated Critical with a CVSS score of 9.3. 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-2026-73663?
Yes. A fix has been recorded for CVE-2026-73663. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73663 affect?
CVE-2026-73663 affects FreePBX missedcall module, FreePBX 16.0.0–16.0.10, FreePBX 17.0.0–17.0.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73663?
Upgrade to 16.0.11 or 17.0.4; restrict SIP access and audit admin accounts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated SQLi via crafted SIP From header allows DB corruption and modification of admin accounts, enabling remote admin access.
Immediate action required
- affected< 16.0.11
- affected>= 17.0.1 and < 17.0.4
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.