VDB-212395 · CVE-2022-40876 · GCVE-0-2022-40876

Tenda AX1803 1.0.0.1 HTTP Request fromAdvSetMacMtuWan wanSpeed/cloneType/mac stack-based overflow

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.
8.0	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Tenda AX1803 1.0.0.1. The impacted element is the function fromAdvSetMacMtuWan of the component HTTP Request Handler. This manipulation of the argument wanSpeed/cloneType/mac causes stack-based overflow. This vulnerability is registered as CVE-2022-40876. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability has been found in Tenda AX1803 1.0.0.1 and classified as critical. Affected by this vulnerability is the function fromAdvSetMacMtuWan of the component HTTP Request Handler. The manipulation of the argument wanSpeed/cloneType/mac with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In Tenda ax1803 v1.0.0.1, the http requests handled by the fromAdvSetMacMtuWan functions, wanSpeed, cloneType, mac, can cause a stack overflow and enable remote code execution (RCE).

The weakness was published 10/28/2022. It is possible to read the advisory at cnblogs.com. This vulnerability is known as CVE-2022-40876 since 09/19/2022. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/08/2025).

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

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

Tenda

Name

AX1803

Version

1.0.0.1

License

commercial

Website

Vendor: https://www.tenda.com.cn/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 8.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
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

09/19/2022 🔍
10/28/2022 +39 days 🔍
10/28/2022 +0 days 🔍
05/08/2025 +922 days 🔍

Sourcesinfo

Vendor: tenda.com.cn

Advisory: cnblogs.com
Status: Not defined

CVE: CVE-2022-40876 (🔍)
GCVE (CVE): GCVE-0-2022-40876
GCVE (VulDB): GCVE-100-212395

Entryinfo

Created: 10/28/2022 07:06
Updated: 05/08/2025 01:48
Changes: 10/28/2022 07:06 (40), 11/26/2022 08:27 (12), 05/08/2025 01:48 (16)
Complete: 🔍
Cache ID: 216::103