VDB-232196 · CVE-2023-36356 · EUVD-2023-40324

TP-Link TL-WR940N/TL-WR841N/TL-WR941ND/TL-WR740N GET Request 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.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in TP-Link TL-WR940N, TL-WR841N, TL-WR941ND and TL-WR740N. It has been declared as problematic. This affects an unknown function of the component GET Request Handler. Such manipulation leads to denial of service. This vulnerability is documented as CVE-2023-36356. There is not any exploit available.

Detailsinfo

A vulnerability was found in TP-Link TL-WR940N, TL-WR841N, TL-WR941ND and TL-WR740N (Router Operating System) (version now known) and classified as problematic. Affected by this issue is some unknown processing of the component GET Request Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

TP-Link TL-WR940N V2/V4/V6, TL-WR841N V8, TL-WR941ND V5, and TL-WR740N V1/V2 were discovered to contain a buffer read out-of-bounds via the component /userRpm/VirtualServerRpm. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted GET request.

The weakness was released 06/23/2023. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2023-36356 since 06/21/2023. There are neither technical details nor an exploit publicly available.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-40324). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

TP-Link

Name

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: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.7
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.7
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

06/21/2023 🔍
06/23/2023 +2 days 🔍
06/23/2023 +0 days 🔍
01/13/2026 +935 days 🔍

Sourcesinfo

Vendor: tp-link.com

Advisory: github.com
Status: Not defined

CVE: CVE-2023-36356 (🔍)
GCVE (CVE): GCVE-0-2023-36356
GCVE (VulDB): GCVE-100-232196
EUVD: 🔍

Entryinfo

Created: 06/23/2023 08:18
Updated: 01/13/2026 21:26
Changes: 06/23/2023 08:18 (38), 06/23/2023 08:19 (1), 07/17/2023 12:39 (11), 01/13/2026 21:26 (16)
Complete: 🔍
Cache ID: 216::103