CVE-2025-15194 D-Link DIR-600 HTTP Header hedwig.cgi stack-based overflow

Critical 9.3 Published 29 Dec 2025 Updated 29 Dec 2025

Remote attackers can execute arbitrary code on unsupported D-Link DIR-600 routers via a stack-based buffer overflow in the HTTP header handler.

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

What is CVE-2025-15194?

CVE-2025-15194 is a critical memory corruption vulnerability in D-Link DIR-600, published on 29 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability was found in D-Link DIR-600 up to 2.15WWb02. Affected by this vulnerability is an unknown functionality of the file hedwig.cgi of the component HTTP Header Handler. The manipulation of the argument Cookie results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-121, CWE-119

Which versions are affected by CVE-2025-15194?

It affects 1 product.

Products include Dlink Dir-600 Firmware.

How do I fix CVE-2025-15194?

No fix has been published for CVE-2025-15194 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-2025-15194 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-15194 exists.

Sources

Also known as GHSA-jrvx-v9w9-54rr.