Known exploited vulnerability
CVE-2025-64328
The short answer
CVE-2025-64328 affects FreePBX filestore and is rated high (CVSS 8.6). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-02-03: attackers are using it, so patch it first.
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.
Weakness: CWE-78.
Severity
8.6 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploited (CISA KEV)
Yes, since Feb 3, 2026
Federal due date Feb 24, 2026
EPSS, next 30 days
85%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- High
- User interaction
- None
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
filestore. NVD's record lists the exact affected versions.
References
- github.com/FreePBX/filestore/blob/f0e3983059271efd80b483ec823310ef19a59013/drivers/SSH/testconnection.php#L2 Product
- github.com/FreePBX/security-reporting/security/advisories/GHSA-vm9p-46mv-5xvw Vendor AdvisoryMitigation
- www.freepbx.org/watch-what-we-do-with-security-fixes-%f0%9f%91%80 Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-64328 Third Party AdvisoryUS Government Resource
- www.fortinet.com/blog/threat-research/unveiling-the-weaponized-web-shell-encystphp ExploitThird Party Advisory
Questions
Is CVE-2025-64328 being exploited?
Yes. CISA added CVE-2025-64328 to its Known Exploited Vulnerabilities catalog on 2026-02-03, with a federal remediation due date of 2026-02-24.
How do I fix CVE-2025-64328?
CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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