Threats / Sangoma / CVE-2025-64328
CVE-2025-64328
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Sangoma FreePBX vulnerability
Sangoma FreePBX Endpoint Manager contains an OS command injection vulnerability in the testconnection function that allows authenticated users to execute arbitrary commands as the asterisk system user.
Verdict
Today item — known-exploited.
An authenticated attacker can inject OS commands through the check_ssh_connect() function to gain remote code execution on the FreePBX system. This post-authentication vulnerability enables lateral movement and system compromise with asterisk-level privileges.
CISA KEV Yes · 2026-02-035EPSS 0.84618 (verify live)6CVSS 8.63CISA SSVC Exploitation: active · Automatable: no · Impact: total4Exploit Weaponized · public exploit · Metasploit module · nuclei template13
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
5 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-02-03).
Probability (EPSS)
EPSS 0.84618 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 8.6 (CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N) · Affected: Sangoma, FreePBX . Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 4.0, set at disclosure.
Weakness (CWE)
Mapped to CWE-78 OS Command Injection — weakness family: Injection.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: no · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 88 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a functional/weaponized public exploit). Catalog entries: Metasploit module, nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I authenticate to FreePBX with valid credentials and access the Endpoint Manager interface.
Business
Internal user accounts or compromised credentials provide initial access to the administrative interface.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I craft a malicious input in the testconnection function that injects shell metacharacters into the check_ssh_connect() call.
Business
Input validation failures allow attackers to break out of intended command boundaries.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute arbitrary OS commands with asterisk user privileges to establish persistence or pivot within the network.
Business
Remote code execution compromises system integrity and enables data exfiltration or further lateral movement.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05