CVE-2026-104610
Deferred Deferred - Pending Action

Stack-Based Buffer Overflow in Tenda HG Series Boa Web Server

Vulnerability report for CVE-2026-104610, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-02

Last updated on: 2026-10-02

Assigner: VulDB

Description

A security vulnerability has been detected in Tenda HG7, HG9 and HG10 300001138_en_xpon. This impacts the function boaGetVar of the file /boaform/formLoopBack of the component Boa Web Server. Such manipulation of the argument Ethtype leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-02
Last Modified
2026-10-02
Generated
2026-10-02
AI Q&A
2026-10-02
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 5 associated CPEs
Vendor Product Version / Range
tenda hg7 *
tenda hg9 *
tenda hg10 *
tenda boa_web_server *
tenda hg10 to HG7_HG9_HG10re_300001138_en_xpon (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
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).
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is a stack-based buffer overflow in Tenda HG7, HG9, and HG10 routers. It occurs in the Boa Web Server's boaGetVar function via the Ethtype parameter in the /boaform/formLoopBack endpoint. The flaw allows unauthenticated remote attackers to crash the web service or execute arbitrary code with root privileges by sending a maliciously crafted POST request with an oversized Ethtype value.

Detection Guidance

Check if your Tenda device (HG7, HG9, or HG10) is running firmware version HG7_HG9_HG10re_300001138_en_xpon. Use network scanning tools like Nmap to detect open ports (80 for web interface) on the device. Monitor for crashes in the Boa web server process or unusual POST requests to /boaform/formLoopBack with long Ethtype parameters.

Impact Analysis

An attacker could exploit this to crash the Boa web service, making the router's administrative interface inaccessible. Since the Boa process runs with high privileges, there is also a risk of arbitrary code execution, potentially leading to full system compromise. The attack requires no authentication or user interaction.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating confidentiality requirements in GDPR and HIPAA. Compromised routers may expose sensitive network traffic or user data, resulting in non-compliance with data protection regulations.

Mitigation Strategies

Isolate the affected Tenda device from the network to prevent remote exploitation. Disable the Boa web server if possible or restrict access to trusted IPs. Update the firmware to a patched version if available. Monitor for signs of exploitation or service crashes.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-104610. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart