Submit #834888: Tenda HG10 HG7_HG9_HG10re_300001138_en_xpon stack-based buffer overflow

# Tenda HG10 Stack-based Buffer Overflow Vulnerability

## Summary

A stack-based buffer overflow vulnerability exists in the formDOMAINBLK interface via the blkDomain parameter exposed through the web management interface /boaform/formDOMAINBLK of the Tenda HG10 router.

## Vendor

Tenda

## Product

HG10

## Affected Version

HG7_HG9_HG10re_300001138_en_xpon

## Vulnerability Type

Stack-based Buffer Overflow

## Affected Interface

/boaform/formDOMAINBLK

## Affected Function

formDOMAINBLK

## Affected Parameter

blkDomain

## Description

A stack-based buffer overflow vulnerability exists in the formDOMAINBLK interface via the blkDomain parameter exposed through the web management interface /boaform/formDOMAINBLK of the Tenda HG10 router.

The vulnerable code copies user-controlled blkDomain input into a stack buffer without effective length validation, which may overwrite the stack frame.

## Impact

An unauthenticated attacker with access to the web management interface may be able to trigger a denial of service by crashing the Boa web service or potentially execute arbitrary code depending on the runtime environment and protections.

## Disclosure

This vulnerability is submitted through VulDB for CVE assignment.

## Assets

Relevant screenshots and supporting materials are stored in the assets directory.

• Source: ⚠️ https://github.com/ssaaaa1234/Tenda-HG10-formDOMAINBLK-stack-overflow-2
• User: moist (UID 98412)
• Submission: 05/21/2026 11:56 (20 days ago)
• Moderation: 06/07/2026 15:23 (17 days later)
• Status: Accepted
• VulDB entry: 369119 [Tenda HG7HG9/HG10 300001138_en_xpon /boaform/formDOMAINBLK blkDomain stack-based overflow]
• Points: 20