CVE-2025-25427 XSS in TP-Link TL-WR841N v14/v14.6/v14.8 Upnp page
Remote attackers can inject JavaScript into the UPnP page of TP-Link routers, leading to script execution when the page is viewed.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-25427?
CVE-2025-25427 is a high-severity cross-site scripting vulnerability in TP-Link Systems Inc. TL-WR841N v14/v14.6/v14.8, published on 18 Apr 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A stored cross-site scripting (XSS) vulnerability in the upnp.htm page of the web Interface in TP-Link WR841N v14/v14.6/v14.8 <= Build 241230 Rel. 50788n allows remote attackers to inject arbitrary JavaScript code via the port mapping description. This leads to an execution of the JavaScript payload when the upnp page is loaded.
Weakness: CWE-79
Which versions are affected by CVE-2025-25427?
It affects 1 product.
Products include Tp-Link Wr841n Firmware.
How do I fix CVE-2025-25427?
No fix has been published for CVE-2025-25427 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-2025-25427 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-25427 exists.
Sources
Also known as GHSA-fgvj-q3hx-cpwr.