CVE-2025-4343 D-Link DIR-600L formEasySetupWizard buffer overflow

High 8.7 Published 6 May 2025 Updated 6 May 2025

Remote attackers can exploit a buffer overflow in the D-Link DIR-600L router to execute arbitrary code, affecting unsupported devices.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-4343?

CVE-2025-4343 is a high-severity memory corruption vulnerability in D-Link DIR-600L, published on 6 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability has been found in D-Link DIR-600L up to 2.07B01 and classified as critical. This vulnerability affects the function formEasySetupWizard. The manipulation of the argument host leads to buffer overflow. The attack can be initiated remotely. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2025-4343?

It affects 1 product.

Products include Dlink Dir-600l Firmware.

How do I fix CVE-2025-4343?

No fix has been published for CVE-2025-4343 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-2025-4343 being exploited?

There is no known exploitation of CVE-2025-4343 in the wild and no public exploit code.

Sources

Also known as GHSA-8gjg-q649-xp4c.