CVE-2025-67188

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A950RG/5024-ipv6-setRadvdCfg-radvdinterfacename-buffer.md	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:totolink:a950rg_firmware:4.1.2cu.5204_b20210112:*:*:*:*:*:*:*

cpe:2.3:h:totolink:a950rg:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-03 18:16

Updated : 2026-02-10 14:15

NVD link : CVE-2025-67188

Mitre link : CVE-2025-67188

CVE.ORG link : CVE-2025-67188

JSON object : View

Products Affected

totolink

a950rg_firmware
a950rg

CWE

CWE-120

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

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