CVE-2019-6551

CVE-2019-6551 affects all versions 3.1.8 and prior of Pangea Communications Internet FAX ATA devices, allowing an unauthenticated attacker to bypass user authentication. By crafting a specific URL, an attacker can force the device to reboot, leading to a continual denial-of-service condition. This vulnerability has a CVSS score of 7.5 (HIGH) due to its network-based attack vector, low attack complexity, and high impact on availability, requiring no user interaction or privileges. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.