CVE-2025-12241 HIGH

CVE-2025-12241: TOTOLINK A3300R POST Parameter cstecgi.cgi setLanguageCfg stack-based overflow

Vendor Totolink
Product A3300R
Weakness CWE-121
Published October 27, 2025
Last update October 27, 2025
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A vulnerability was detected in TOTOLINK A3300R 17.0.0cu.557_B20221024. This impacts the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component POST Parameter Handler. The manipulation of the argument lang results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used.

Key dates

02Disclosure timeline

October 27, 2025 CVE published
October 27, 2025 Record updated