Buffer overflow in Totolink A950rg

CVE-2025-67189

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.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (34.9th percentile) — read the EPSS interpretation.