CVE-2025-67188

Published: Feb 3, 2026Modified: Feb 10, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

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.

Affected (1)

Products: Totolink: A950rg Firmware

1 product

A950rg Firmware

Configuration A

1 vulnerable · 1 platform

Vulnerable Software	Affected Versions
Totolink A950rg Firmware	Version 4.1.2cu.5204_b20210112

Running on/with	Platform Versions
Totolink A950rg	All versions

Related CWEs

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.

References (1)

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A950RG/5024-ipv6-setRadvdCfg-radvdinterfacename-buffer.md

Source: cve@mitre.org

ExploitThird Party Advisory

Timeline

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