VDB-341392 · CVE-2025-9014 · EUVD-2026-2745

TP-Link TL-WR841N v14 prior 250908 Web Portal Service null pointer dereference

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6.3	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in TP-Link TL-WR841N v14. The impacted element is an unknown function of the component Web Portal Service. Executing a manipulation can lead to null pointer dereference. This vulnerability is tracked as CVE-2025-9014. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in TP-Link TL-WR841N v14 and classified as problematic. This vulnerability affects some unknown functionality of the component Web Portal Service. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

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.

The weakness was disclosed by Justus W. Perlwitz. The advisory is shared for download at tp-link.com. This vulnerability was named CVE-2025-9014 since 08/13/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 250908 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-2745). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Router Operating System

Vendor

TP-Link

Name

TL-WR841N v14

License

commercial

Website

Vendor: https://www.tp-link.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: TL-WR841N v14 250908

Timelineinfo

08/13/2025 CVE reserved
01/15/2026 +155 days Advisory disclosed
01/15/2026 +0 days VulDB entry created
01/31/2026 +16 days VulDB entry last update

Sourcesinfo

Vendor: tp-link.com

Advisory: tp-link.com
Researcher: Justus W. Perlwitz
Status: Confirmed

CVE: CVE-2025-9014 (🔒)
GCVE (CVE): GCVE-0-2025-9014
GCVE (VulDB): GCVE-100-341392
EUVD: 🔒

Entryinfo

Created: 01/15/2026 20:51
Updated: 01/31/2026 02:33
Changes: 01/15/2026 20:51 (68), 01/31/2026 00:28 (1), 01/31/2026 02:33 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.