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CVE-2025-12241

Published: Oct 27, 2025

Modified: Oct 27, 2025

PUBLISHED

CVSS v3.1

8.8

HIGH

Description

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.

Vendor	Product	Versions
TOTOLINK	A3300R	affected `17.0.0cu.557_B20221024`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

VDB-329911 | TOTOLINK A3300R POST Parameter cstecgi.cgi setLanguageCfg stack-based overflow

vdb-entry

technical-description

VDB-329911 | CTI Indicators (IOB, IOC, IOA)

signature

permissions-required

Submit #673723 | TOTOLINK A3300R V17.0.0cu.557_B20221024 Buffer Overflow

third-party-advisory

https://github.com/noahze01/IoT-vulnerable/blob/main/TOTOLink/A3300R/setLanguageCfg.md

exploit

https://www.totolink.net/

product

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