CVE-2025-67187: Totolink a950rg Firmware

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A stack-based buffer overflow vulnerability was identified in TOTOLINK A950RG V4.1.2cu.5204_B20210112. The flaw exists in the setIpQosRules interface of /lib/cste_modules/firewall.so where the comment parameter is not properly validated for length.

Affected products

• Totolink a950rg Firmware: version 4.1.2cu.5204_b20210112 only

Published 2026-02-03. Last modified 2026-06-17.