CVE-2026-7470
Received Received - Intake
Stack-Based Buffer Overflow in Tenda 4G300 Router

Publication date: 2026-04-30

Last updated on: 2026-04-30

Assigner: VulDB

Description
A flaw has been found in Tenda 4G300 US_4G300V1.0Mt_V1.01.42_CN_TDC01. Affected is the function sub_427C3C of the file /goform/SafeMacFilter. This manipulation of the argument page causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.
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Meta Information
Published
2026-04-30
Last Modified
2026-04-30
Generated
2026-06-16
AI Q&A
2026-04-30
EPSS Evaluated
2026-06-14
NVD
CVE-2026-7470
EUVD
EUVD-2026-26307
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
tenda 4g300_firmware 1.01.42_cn_tdc01
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
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.
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).
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Executive Summary

This vulnerability is a stack-based buffer overflow found in the Tenda 4G300 device, specifically in the function sub_427C3C of the file /goform/SafeMacFilter. It occurs due to improper handling or manipulation of the argument 'page', which allows an attacker to overwrite parts of the stack memory.

Because the vulnerability is remotely exploitable, an attacker can potentially execute arbitrary code or cause a denial of service on the affected device without physical access.

The exploit for this vulnerability has already been published, increasing the risk of attacks.

Impact Analysis

Exploitation of this vulnerability can lead to severe impacts including complete compromise of the affected device.

  • Remote attackers can execute arbitrary code with elevated privileges.
  • Confidentiality, integrity, and availability of the device and its data can be fully compromised.
  • Potential denial of service conditions may be triggered, disrupting network connectivity.
Executive Summary

This vulnerability is a stack-based buffer overflow found in the Tenda 4G300 device, specifically in the function sub_427C3C of the file /goform/SafeMacFilter. It occurs due to improper handling or manipulation of the argument 'page'.

Because of this flaw, an attacker can remotely exploit the device by sending specially crafted input to cause the buffer overflow.

The exploit for this vulnerability has already been published, which increases the risk of it being used in attacks.

Impact Analysis

The vulnerability allows remote attackers to execute arbitrary code or cause a denial of service by exploiting the stack-based buffer overflow.

According to the CVSS scores, the impact is high on confidentiality, integrity, and availability, meaning sensitive data could be exposed or altered, and the device could be disrupted.

Since the exploit is publicly available, the risk of compromise is significant if the device is exposed to untrusted networks.

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