CVE-2025-4850: Totolink n300rh Firmware

Medium severity, CVSS 6.3. EPSS: 1.2% chance of exploitation in the next 30 days.

A vulnerability classified as critical has been found in TOTOLINK N300RH 6.1c.1390_B20191101. This affects the function setUnloadUserData of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument plugin_name leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Totolink n300rh Firmware: version 6.1c.1390_b20191101 only

Published 2025-05-18. Last modified 2026-06-17.