CVE-2025-67186

critical · 9.8

TOTOLINK A950RG V4.1.2cu.5204_B20210112 contains a buffer overflow vulnerability in the setUrlFilterRules interface of /lib/cste_modules/firewall.so. The vulnerability occurs because the `url` parameter is not properly validated for length, allowing remote attackers to trigger a buffer overflow, potentially leading to arbitrary code execution or denial of service.

9.8

CVSS

0.7%

EPSS (exploit prob.)

52nd

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-setUrlFliterRules-url-buffer.md

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-67186