VDB-237179 · CVE-2023-39827 · EUVD-2023-43527

Tenda A18 15.13.07.09 formAddMacfilterRule rule_info 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.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Tenda A18 15.13.07.09. It has been classified as critical. This affects the function formAddMacfilterRule. The manipulation of the argument rule_info leads to stack-based overflow. This vulnerability is traded as CVE-2023-39827. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Tenda A18 15.13.07.09. This issue affects the function formAddMacfilterRule. The manipulation of the argument rule_info with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to 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). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Tenda A18 V15.13.07.09 was discovered to contain a stack overflow via the rule_info parameter in the formAddMacfilterRule function.

The weakness was shared 08/15/2023. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-39827 since 08/07/2023. Technical details of the vulnerability are known, but there is no available exploit.

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-2023-43527). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

Tenda

Name

Version

15.13.07.09

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: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

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

08/07/2023 🔍
08/15/2023 +8 days 🔍
08/15/2023 +0 days 🔍
01/26/2026 +895 days 🔍

Sourcesinfo

Vendor: tenda.com.cn

Advisory: github.com
Status: Not defined

CVE: CVE-2023-39827 (🔍)
GCVE (CVE): GCVE-0-2023-39827
GCVE (VulDB): GCVE-100-237179
EUVD: 🔍

Entryinfo

Created: 08/15/2023 09:45
Updated: 01/26/2026 12:36
Changes: 08/15/2023 09:45 (39), 09/09/2023 12:10 (11), 01/26/2026 12:36 (17)
Complete: 🔍
Cache ID: 216::103

Submitinfo

Duplicate

Submit #XXXXXX: Xxxxx Xxx Xxx.xx.xx.xx Xxxxxx Xxxxxxxx (by GuoXB)

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