CVE-2025-25427

XSS in TP-Link TL-WR841N v14/v14.6/v14.8 Upnp page

MEDIUM
5.4
CVSS Score
Published: April 18, 2025 at 12:03 AM UTC
Updated: June 17, 2026 at 09:00 AM UTC
3 products affected across 1 vendorWR841N FirmwareWr841NLink WR841N

Using TL-WR841N v14/v14.6/v14.8 by TP-Link Systems Inc.?

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.6%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 241230
tp-link-wr841n (same device)
v ≤ Build 241230 Rel. 50788n
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

ExploitThird Party Advisory
Source: f23511db-6c3e-4e32-a477-6aa17d310630
https://github.com/slin99/2025-25427
Product
Source: f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/download/tl-wr841n/#Firmware
Vendor Advisory
Source: f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/faq/4415/
ExploitThird Party Advisory
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://github.com/slin99/2025-25427/blob/master/readme.md

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

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