CVE-2026-5177: Totolink a3300r Firmware

High severity, CVSS 8.8. EPSS: 3.6% chance of exploitation in the next 30 days.

A weakness has been identified in Totolink A3300R 17.0.0cu.557_b20221024. Affected by this vulnerability is the function setWiFiBasicCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument rxRate can lead to command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

• Totolink a3300r Firmware: version 17.0.0cu.557_b20221024 only

Published 2026-03-31. Last modified 2026-06-17.