CVE-2025-9003 D-Link DIR-818LW DHCP Reserved Address bsc_lan.php cross site scripting

Medium 5.1 Published 15 Aug 2025 Updated 18 Aug 2025

Remote attackers can inject malicious scripts via the DHCP Reserved Address Name field in unsupported D-Link DIR-818LW routers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-9003?

CVE-2025-9003 is a medium-severity cross-site scripting vulnerability in D-Link DIR-818LW, published on 15 Aug 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability has been found in D-Link DIR-818LW 1.04. This vulnerability affects unknown code of the file /bsc_lan.php of the component DHCP Reserved Address Handler. The manipulation of the argument Name leads to cross site scripting. The attack can be initiated remotely. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-94, CWE-79

Which versions are affected by CVE-2025-9003?

It affects 1 product.

Products include Dlink Dir-818lw Firmware.

How do I fix CVE-2025-9003?

No fix has been published for CVE-2025-9003 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-9003 being exploited?

There is no known exploitation of CVE-2025-9003 in the wild and no public exploit code.

Sources

Also known as GHSA-xr6g-c2xh-qr7x.