CVE-2026-7748: Totolink n300rh

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A weakness has been identified in Totolink N300RH 3.2.4-B20220812. Affected by this issue is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Executing a manipulation of the argument FileName can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

• Totolink n300rh: version 3.2.4-B20220812 only

Published 2026-05-04. Last modified 2026-06-17.