VDB-216418 · CVE-2022-46139 · GCVE-0-2022-46139

TP-Link TL-WR940N V4 up to 3.16.9 Firmware denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in TP-Link TL-WR940N V4 up to 3.16.9. It has been declared as problematic. This issue affects some unknown processing of the component Firmware Handler. Executing a manipulation can lead to denial of service. This vulnerability appears as CVE-2022-46139. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability has been found in TP-Link TL-WR940N V4 up to 3.16.9 (Router Operating System) and classified as problematic. This vulnerability affects some unknown processing of the component Firmware Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

TP-Link TL-WR940N V4 3.16.9 and earlier allows authenticated attackers to cause a Denial of Service (DoS) via uploading a crafted firmware image during the firmware update process.

The weakness was presented 12/21/2022. The advisory is available at hackmd.io. This vulnerability was named CVE-2022-46139 since 11/28/2022. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Router Operating System

Vendor

TP-Link

Name

TL-WR940N V4

Version

License

commercial

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.4
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: 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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/28/2022 🔍
12/21/2022 +23 days 🔍
12/21/2022 +0 days 🔍
01/21/2023 +31 days 🔍

Sourcesinfo

Vendor: tp-link.com

Advisory: hackmd.io
Status: Not defined

CVE: CVE-2022-46139 (🔍)
GCVE (CVE): GCVE-0-2022-46139
GCVE (VulDB): GCVE-100-216418

Entryinfo

Created: 12/21/2022 09:00
Updated: 01/21/2023 12:59
Changes: 12/21/2022 09:00 (39), 01/21/2023 12:59 (11)
Complete: 🔍
Cache ID: 216::103