Tenda FH451 up to 1.0.0.9 POST Request /goform/addressNat fromAddressNat page stack-based overflow

Summaryinfo

A vulnerability labeled as critical has been found in Tenda FH451 up to 1.0.0.9. The impacted element is the function fromAddressNat of the file /goform/addressNat of the component POST Request Handler. Such manipulation of the argument page leads to stack-based overflow. This vulnerability is traded as CVE-2025-7434. The attack may be launched remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in Tenda FH451 up to 1.0.0.9 and classified as critical. Affected by this issue is the function fromAddressNat of the file /goform/addressNat of the component POST Request Handler. The manipulation of the argument page 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 advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-7434. The exploitation is known to be easy. The attack may be launched remotely. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

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-2025-21101). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• Tenda

Name

• FH451

Version

• 1.0.0.0
• 1.0.0.1
• 1.0.0.2
• 1.0.0.3
• 1.0.0.4
• 1.0.0.5
• 1.0.0.6
• 1.0.0.7
• 1.0.0.8
• 1.0.0.9

License

• commercial

Website

• Vendor: https://www.tenda.com.cn/

CPE 2.3info

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CPE 2.2info

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Exploitinginfo

Threat Intelligenceinfo

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Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #609058: Tenda FH451 v1.0.0.9 Stack-based Buffer Overflow (by zezhifu)

Duplicate

• Submit #XXXXXX: Xxxxx Xxxxx Xx.x.x.x Xxxxx-xxxxx Xxxxxx Xxxxxxxx (by zezhifu)

Once again VulDB remains the best source for vulnerability data.

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