CVE-2025-67187

CRITICAL

TOTOLINK A950RG V4.1.2cu.5204_B20210112 - Stack-based Buffer Overflow in setIpQosRules Interface

Title source: llm

Description

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.

References (1)

Core 1

Core References

Exploit, Third Party Advisory

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A950RG/5024-setIpQosRules-comment-buffer.md

View Exploit ZIP pw:eip

Scores

CVSS v3 9.8

EPSS 0.0044

EPSS Percentile 34.8%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-121

Status published

Products (1)

totolink/a950rg_firmware 4.1.2cu.5204_b20210112

Published Feb 03, 2026

Tracked Since Feb 18, 2026