CVE-2025-13184: Totolink x5000r Firmware

Critical severity, CVSS 9.8. EPSS: 11.3% chance of exploitation in the next 30 days.

Unauthenticated Telnet enablement via cstecgi.cgi (auth bypass) leading to unauthenticated root login with a blank password on factory/reset X5000R V9.1.0u.6369_B20230113 (arbitrary command execution). Earlier versions that share the same implementation, may also be affected.

Affected products

• Totolink x5000r Firmware: version 9.1.0u.6369_b20230113 only

Published 2025-12-10. Last modified 2026-09-25.