CVE-2025-67188

critical · 9.8

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.

9.8

CVSS

0.6%

EPSS (exploit prob.)

49th

EPSS percentile

2026-02-03

Published

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

Weaknesses

CWE-120

Affected products

Vendor	Product	Affected versions
totolink	a950rg_firmware	4.1.2cu.5204_b20210112
totolink	a950rg	all versions

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-67188