CVE-2025-66039 describes a critical authentication bypass vulnerability in FreePBX Endpoint Manager versions prior to 16.0.44 and 17.0.23. This flaw allows an unauthenticated attacker to gain unauthorized access to a target user's session by providing an arbitrary Authorization header when the authentication type is set to "webserver." With a CVSS score of 9.8 (CRITICAL), this vulnerability poses a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While not currently listed in CISA's KEV catalog, the vulnerability has a high EPSS score, indicating a higher likelihood of exploitation, and has garnered substantial community discussion, including the development of related exploit modules for Metasploit.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 16.0.44CPE matchmatch criteria | cpe:2.3:a:sangoma:freepbx:*:*:*:*:*:*:*:* | ||
>= 17.0.1, < 17.0.23CPE matchmatch criteria | cpe:2.3:a:sangoma:freepbx:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.