CVE-2025-66039
high-risk
Published 2025-12-09
FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. Versions are vulnerable to authentication bypass when the authentication type is set to "webserver." When providing an Authorization header with an arbitrary value, a session is associated with the target user regardless of valid credentials. This issue is fixed in versions 16.0.44 and 17.0.23.
Do I need to act?
!
34.7% chance of exploitation in next 30 days
EPSS score — higher than 65% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
53
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
16/34 · Moderate
Exposure
5/34 · Minimal