CVE-2026-28210

High

Published: 05 March 2026

Published

05 March 2026

Modified

06 March 2026

KEV Added

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Patch

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CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0006 18.9th percentile

Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-28210 is a high-severity SQL Injection (CWE-89) vulnerability in Sangoma Freepbx. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 18.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 2 other techniques. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-2 Flaw Remediation good match

prevent

Requires timely identification, reporting, and patching of the specific SQL injection flaw in the FreePBX CDR module affecting versions prior to 16.0.49 and 17.0.7.

SI-10 Information Input Validation good match

prevent

Directly prevents SQL injection attacks by enforcing input validation and error handling for user-supplied data processed by the CDR module before SQL query construction.

AC-6 Least Privilege partial match

prevent

Reduces the attack surface by applying least privilege to limit authenticated low-privilege user access to the vulnerable CDR module functions.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1213.006 Databases Collection

Adversaries may leverage databases to mine valuable information.

attack.mitre.org →

T1565.001 Stored Data Manipulation Impact

Adversaries may insert, delete, or manipulate data at rest in order to influence external outcomes or hide activity, thus threatening the integrity of the data.

attack.mitre.org →

Why these techniques?

SQL injection in network-accessible FreePBX web app directly enables T1190 (public-facing exploitation); arbitrary SQL commands allow DB data extraction (T1213.006) and stored record modification (T1565.001).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

FreePBX is an open source IP PBX. Prior to versions 16.0.49 and 17.0.7, FreePBX module cdr (Call Data Record) is vulnerable to SQL query injection. This issue has been patched in versions 16.0.49 and 17.0.7.

Deeper analysisAI

CVE-2026-28210 is a SQL query injection vulnerability (CWE-89) in the cdr (Call Data Record) module of FreePBX, an open source IP PBX software. The flaw affects FreePBX versions prior to 16.0.49 and 17.0.7, allowing malicious SQL queries to be injected through the module. It has a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its potential for significant impact.

An attacker with low privileges (PR:L), such as an authenticated user on the network-accessible system (AV:N), can exploit this vulnerability with low complexity (AC:L) and no user interaction required (UI:N). Successful exploitation enables high confidentiality, integrity, and availability impacts (C:H/I:H/A:H), potentially allowing arbitrary SQL command execution to extract sensitive call data, modify records, or disrupt PBX operations.

The issue has been addressed in FreePBX versions 16.0.49 and 17.0.7, as detailed in the GitHub security advisory at https://github.com/FreePBX/security-reporting/security/advisories/GHSA-59gp-632h-c54v. Security practitioners should update to these patched versions and review access controls for the cdr module to mitigate risks.