CVE-2023-51034: Totolink EX1200L Firmware

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

TOTOlink EX1200L V9.3.5u.6146_B20201023 is vulnerable to arbitrary command execution via the cstecgi.cgi UploadFirmwareFile interface.

Affected products

• Totolink EX1200L Firmware: version 9.3.5u.6146_b20201023 only

Published 2023-12-22. Last modified 2026-06-17.