CVE-2025-25427: TP-Link WR841N Firmware

Medium severity, CVSS 5.4. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• TP-Link WR841N Firmware: up to and including 241230

Published 2025-04-18. Last modified 2026-06-17.