CVE-2025-67189: Totolink a950rg Firmware

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

A buffer overflow vulnerability exists in the setParentalRules interface of TOTOLINK A950RG V4.1.2cu.5204_B20210112. The urlKeyword parameter is not properly validated, and the function concatenates multiple user-controlled fields into a fixed-size stack buffer without performing boundary checks. A remote attacker can exploit this flaw to cause denial of service or potentially achieve arbitrary code execution.

Affected products

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

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