A buffer overflow vulnerability exists in TOTOLINK A950RG V4.1.2cu.5204_B20210112. The issue resides in the setRadvdCfg interface of the /lib/cste_modules/ipv6.so module. The function fails to properly validate the length of the user-controlled radvdinterfacename parameter, allowing remote attackers to trigger a stack buffer overflow.

Published: 2026-02-03

CVSS: 9.8

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Download CVE-2025-67188 POC (Proof-of-Concept) here:

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https://dnacompany.com/poc-380-cve-2026-0926/

https://dnacompany.com/poc-737-cve-2026-21660/