CVE-2026-7719: Totolink WA300

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

A security flaw has been discovered in Totolink WA300 5.2cu.7112_B20190227. The affected element is the function loginauth of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument http_host results in buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Affected products

• Totolink WA300: version 5.2cu.7112_B20190227 only

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