CVE-2026-7750: Totolink n300rh

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

A vulnerability was detected in Totolink N300RH 3.2.4-B20220812. This vulnerability affects the function setMacFilterRules of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument mac_address results in buffer overflow. The attack may be launched remotely. The exploit is now public and may be used.

Affected products

• Totolink n300rh: version 3.2.4-B20220812 only

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