CVE-2024-1003 Totolink N200RE cstecgi.cgi setLanguageCfg stack-based overflow

High 7.2 Published 29 Jan 2024 Updated 17 Jun 2025

A remote attacker can trigger a stack-based buffer overflow in the setLanguageCfg function of the Totolink N200RE router, potentially leading to code execution.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2024-1003?

CVE-2024-1003 is a high-severity memory corruption vulnerability in Totolink N200RE, published on 29 Jan 2024. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A vulnerability, which was classified as critical, has been found in Totolink N200RE 9.3.5u.6139_B20201216. Affected by this issue is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument lang leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-252272. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-121

Which versions are affected by CVE-2024-1003?

It affects 1 product.

Products include Totolink N200re Firmware.

How do I fix CVE-2024-1003?

No fix has been published for CVE-2024-1003 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2024-1003 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-1003 exists.

Sources

Also known as GHSA-9h4j-w5f8-xjpc.