VulnerabilityPublished 10 Dec 2025Updated 13 Feb 2026

CVE-2025-67513: FreePBX endpoint · Weak Password Requirements

Affects FreePBX endpointSource CVE Database V5

Not known to be exploited · CVSS 6.9 Medium : upgrade to 17.0.10 or 16.0.96 when convenient.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 4.0 base score

6.9Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 17.0.10, 16.0.96

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade freepbx/endpoint to 17.0.10 or 16.0.96.

Affected software

Product	Affected	Fixed in
GitHubfreepbx/endpoint`pkg:github/freepbx/endpoint`Other threats	Affected <16.0.96 >=17.0.1 <17.0.10	Fixed in 16.0.96 17.0.10

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should immediately verify their FreePBX Endpoint Manager versions and upgrade to 16.0.96 or 17.0.10 or later. Beyond patching, administrators must enforce strong password policies, replacing any default or weak numeric passwords with complex alphanumeric passwords of sufficient length. Implement rate limiting or account lockout mechanisms on authentication attempts to mitigate brute force attacks. Network segmentation should isolate telephony management interfaces from public or untrusted networks. Monitoring and logging of authentication attempts on the Endpoint Manager should be enabled to detect suspicious activity. Additionally, organizations should conduct regular audits of telephony configurations and credentials, and educate staff on the risks associated with weak telephony passwords. Where feasible, multi-factor authentication should be implemented for administrative access to telephony management systems.

Description

FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. Versions prior to 16.0.96 and 17.0.1 through 17.0.9 have a weak default password. By default, this is a 6 digit numeric value which can be brute forced. (This is the app_password parameter). Depending on local configuration, this password could be the extension, voicemail, user manager, DPMA or EPM phone admin password. This issue is fixed in versions 16.0.96 and 17.0.10.

Impact

For European organizations, exploitation of this vulnerability could lead to unauthorized access to telephony systems, allowing attackers to intercept calls, manipulate voicemail, or disrupt telephony services. This could result in confidentiality breaches of sensitive communications, integrity violations through unauthorized configuration changes, and availability impacts if telephony endpoints are disabled or misconfigured. Organizations relying on FreePBX for critical communication infrastructure, especially in sectors like finance, healthcare, and government, face elevated risks. Additionally, compromised telephony systems could be leveraged for further attacks such as social engineering or fraud. The medium severity rating reflects the balance between the ease of exploitation and the scope of impact, but the lack of authentication requirements and the critical nature of telephony systems amplify the potential damage.

CWE-521Weak Password Requirements (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product does not require that users should have strong passwords.
Architecture and Design
A product's design should require adherance to an appropriate password policy. Specific password requirements depend strongly on contextual factors, but it is recommended to contain the following attributes: Enforcement of a minimum and maximum length; Restrictions against password reuse; Restrictions against using…
Architecture and Design
Consider a second authentication factor beyond the password, which prevents the password from being a single point of failure. See CWE-308 for further information.
Implementation
Consider implementing a password complexity meter to inform users when a chosen password meets the required attributes.
OWASP Cheat Sheets
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V2.1.2 (opens in a new tab)
V2.1.4 (opens in a new tab)
V2.1.3 (opens in a new tab)
Attack patterns
Dictionary-based Password Attack (opens in a new tab)
Password Brute Forcing (opens in a new tab)
Kerberoasting (opens in a new tab)
Rainbow Table Password Cracking (opens in a new tab)
Remote Services with Stolen Credentials (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

github.com/FreePBX/security-reporting/security/advisories/GHSA-426v-c5p7-cp29 (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 14 Feb 2026, 07:12 UTC

WeaknessesCWE-521

Technical details

References

Community reviews

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