Tenda M3 1.0.0.10 Destination /goform/setAdvPolicyData policyType buffer overflow

Summaryinfo

A vulnerability has been found in Tenda M3 1.0.0.10 and classified as critical. This issue affects the function setAdvPolicyData of the file /goform/setAdvPolicyData of the component Destination Handler. The manipulation of the argument policyType leads to buffer overflow. This vulnerability is uniquely identified as CVE-2026-5567. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in Tenda M3 1.0.0.10. It has been rated as critical. This issue affects the function setAdvPolicyData of the file /goform/setAdvPolicyData of the component Destination Handler. The manipulation of the argument policyType with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-5567. The exploitation is known to be easy. The attack may be initiated 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• Tenda

Name

• M3

Version

• 1.0.0.10

License

• commercial

Website

• Vendor: https://www.tenda.com.cn/

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CPE 2.2info

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Submitinfo

Accepted

• Submit #782999: Tenda Tenda M3 Access Controller(M3) V1.0.0.10 Buffer Overflow (by Doma)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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