Tenda FH451 1.0.0.9 HTTP fromDhcpListClient page stack-based overflow

Summaryinfo

A vulnerability classified as critical was found in Tenda FH451 1.0.0.9. This vulnerability affects the function fromDhcpListClient of the component HTTP Handler. Executing a manipulation of the argument page can lead to stack-based overflow. This vulnerability appears as CVE-2026-36785. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Tenda FH451 1.0.0.9. It has been declared as critical. This vulnerability affects the function fromDhcpListClient of the component HTTP Handler. The manipulation of the argument page 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. CVE summarizes:

Shenzhen Tenda Technology Co., Ltd Tenda FH451 V1.0.0.9 was discovered to contain a stack overflow in the page parameter of the fromDhcpListClient function. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted HTTP request.

The advisory is available at github.com. This vulnerability was named CVE-2026-36785 since 04/06/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/06/2026).

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

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Productinfo

Type

• Router Operating System

Vendor

• Tenda

Name

• FH451

Version

• 1.0.0.9

License

• commercial

Website

• Vendor: https://www.tenda.com.cn/

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