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CVE-2026-73663

Sangoma Freepbx SQL injection

9.8 CRITICALEPSS 0.38%
  1. Published13 Aug 2026

Description

FreePBX is an open source IP PBX. From 16.0.0 until 16.0.11 and 17.0.4, the FreePBX missedcall module places the inbound Caller ID name from crafted SIP From headers into the missedcalllog INSERT in agi-bin/missedcallnotify.php without escaping or bound parameters. An unauthenticated caller can inject SQL when a monitored extension goes unanswered, corrupting the database and modifying FreePBX administrator accounts to obtain unauthorized remote access. This issue is fixed in versions 16.0.11 and 17.0.4.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Sangoma Freepbx≥ 16.0 < 16.0.11 · ≥ 17.0 < 17.0.4

Remediation

Fixed in
Sangoma Freepbx≥ 16.0.11

References

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Frequently asked

Is CVE-2026-73663 being actively exploited?

CVE-2026-73663 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.38%.

How severe is CVE-2026-73663?

CVE-2026-73663 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.38% probability of exploitation.

Which products are affected by CVE-2026-73663?

Affected products include Sangoma Freepbx.

How do I fix CVE-2026-73663?

Upgrade affected software to a fixed version, for example Sangoma Freepbx 16.0.11 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-73663 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.