XSS in TP-Link TL-WR841N v14/v14.6/v14.8 Upnp page
Priority HIGH 72CWE-79Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00595 48th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| TP-Link | TL-WR841N v14/v14.6/v14.8 | up to Build 241230 Rel. 50788n | — | No fix listed | CNA |
- TL-WR841N v14/v14.6/v14.8 VendorTP-Link Affected up to Build 241230 Rel. 50788n Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:tp-link:wr841n_firmware:*:*:*:*:*:*:*:* | up to 241230 | Vulnerable | TP-Link |
| cpe:2.3:h:tp-link:wr841n:14:*:*:*:*:*:*:* | 14 | Running on | TP-Link |
| cpe:2.3:h:tp-link:wr841n:14.6:*:*:*:*:*:*:* | 14.6 | Running on | TP-Link |
| cpe:2.3:h:tp-link:wr841n:14.8:*:*:*:*:*:*:* | 14.8 | Running on | TP-Link |
- cpe:2.3:o:tp-link:wr841n_firmware:*:*:*:*:*:*:*:* Versions up to 241230 Vulnerable ·TP-Link
- cpe:2.3:h:tp-link:wr841n:14:*:*:*:*:*:*:* Versions 14 Running on ·TP-Link
- cpe:2.3:h:tp-link:wr841n:14.6:*:*:*:*:*:*:* Versions 14.6 Running on ·TP-Link
- cpe:2.3:h:tp-link:wr841n:14.8:*:*:*:*:*:*:* Versions 14.8 Running on ·TP-Link
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-25427
- 2026-10-03 Alias added: GHSA-fgvj-q3hx-cpwr
References
More TP-Link Wr841n Firmware vulnerabilities
- TI-2020-18081 A password-disclosure issue in the web interface on certain TP-Link devices allows a… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-25427 · CVE Program
- CVE-2025-25427 · NVD
- FIRST EPSS
- GHSA-fgvj-q3hx-cpwr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences