High severity · published Jan 15, 2026
CVE-2025-9014
Null Pointer Dereference Vulnerability on TL-WR841N
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TV
TL-WR841N v14 · TP-Link Systems Inc.
before 250908 · source: vendor
TF
Tl-wr841n Firmware · Tp-link
before 250908 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9014
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9014
Product
https://www.tp-link.com/en/support/download/tl-wr841n/#Firmware
Product
https://www.tp-link.com/jp/support/download/tl-wr841n/#Firmware
Product
https://www.tp-link.com/us/support/download/tl-wr841n/#Firmware
Patch
https://www.tp-link.com/us/support/faq/4894/
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