CVE-2024-0998 Totolink N200RE cstecgi.cgi setDiagnosisCfg stack-based overflow

High 7.2 Published 29 Jan 2024 Updated 29 May 2025

Remote attackers can trigger a stack-based buffer overflow in the diagnosis configuration handler, potentially executing arbitrary code on the router.

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-2024-0998?

CVE-2024-0998 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 was found in Totolink N200RE 9.3.5u.6139_B20201216. It has been classified as critical. This affects the function setDiagnosisCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-252267. 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-2024-0998?

It affects 1 product.

Products include Totolink N200re Firmware.

How do I fix CVE-2024-0998?

No fix has been published for CVE-2024-0998 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-2024-0998 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0998 exists.

Sources

Also known as GHSA-h3vc-4gq7-6h97.