CVE-2025-67188 — CRITICAL (9.8)

Vulnerability 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.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Totolink	A950Rg Firmware	4.1.2cu.5204_b20210112
Totolink	A950Rg	-

Related Weaknesses (CWE)

CWE-120

References

https://github.com/SunnyYANGyaya/cuicuishark-sheep-fishIOT/blob/main/ToTolink/A9ExploitThird Party Advisory

FAQ

What is CVE-2025-67188?

CVE-2025-67188 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 properl...

How severe is CVE-2025-67188?

CVE-2025-67188 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2025-67188?

Check the references section above for vendor advisories and patch information. Affected products include: Totolink A950Rg Firmware, Totolink A950Rg.