CVE-2025-5901: Totolink t10 Firmware

High severity, CVSS 8.8. EPSS: 6.2% chance of exploitation in the next 30 days.

A vulnerability has been found in TOTOLINK T10 4.1.8cu.5207 and classified as critical. This vulnerability affects the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. The manipulation of the argument File leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Totolink t10 Firmware: version 4.1.8cu.5207 only

Published 2025-06-09. Last modified 2026-06-17.