Home/CVE/A Null Pointer Dereference vulnerability exists in the referer header check of the web portal of TP-Link TL-WR841N v14,
CVE

CVE-2025-9014

A Null Pointer Dereference vulnerability exists in the referer header check of the web portal of TP-Link TL-WR841N v14,

A Null Pointer Dereference vulnerability exists in the referer header check of the web portal of TP-Link TL-WR841N v14, caused by improper input validation. A remote, unauthenticated attacker can exploit this flaw and cause Denial of Service on the web portal service.This issue affects TL-WR841N v14: before 250908.

HIGH · CVSS 7.5 EPSS 0.00204
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
CWE-476NULL Pointer Dereference
▤

Affected Products & Versions

1
tp-link tl-wr841n firmware< 250908
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · f23511db-6c3e-4e32-a477-6aa17d310630
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 Jan 2026 · 06:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.tp-link.com/en/support/download/tl-wr841n/#FirmwareProduct
https://www.tp-link.com/jp/support/download/tl-wr841n/#FirmwareProduct
https://www.tp-link.com/us/support/download/tl-wr841n/#FirmwareProduct
https://www.tp-link.com/us/support/faq/4894/PatchVendor Advisory
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