CVE-2018-16591: Furuno Felcom 250 Firmware

Critical severity, CVSS 9.8. EPSS: 2.2% chance of exploitation in the next 30 days.

FURUNO FELCOM 250 and 500 devices allow unauthenticated users to change the password for the Admin, Log and Service accounts, as well as the password for the protected "SMS" panel via /cgi-bin/sm_changepassword.cgi and /cgi-bin/sm_sms_changepasswd.cgi.

Affected products

• Furuno Felcom 250 Firmware: affected versions not specified
• Furuno Felcom 500 Firmware: affected versions not specified

Published 2018-09-10. Last modified 2026-06-17.