CVE-2026-3400
Received Received - Intake

Stack-Based Buffer Overflow in Tenda AC15 Remote Exploit

Vulnerability report for CVE-2026-3400, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-03-02

Last updated on: 2026-03-03

Assigner: VulDB

Description

A security flaw has been discovered in Tenda AC15 up to 15.13.07.13. Affected by this issue is some unknown functionality of the file /goform/TextEditingConversion. The manipulation of the argument wpapsk_crypto2_4g results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-03-02
Last Modified
2026-03-03
Generated
2026-07-06
AI Q&A
2026-03-02
EPSS Evaluated
2026-07-05
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
tenda ac15_firmware to 15.13.07.13 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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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.
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

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Executive Summary

CVE-2026-3400 is a stack-based buffer overflow vulnerability found in the Tenda AC15 router firmware versions up to 15.13.07.13.

The flaw exists in an unspecified part of the file /goform/TextEditingConversion, specifically triggered by manipulating the argument wpapsk_crypto2_4g with crafted input.

This manipulation causes the router to overflow a buffer allocated on the stack, which can lead to arbitrary code execution or denial of service.

The vulnerability can be exploited remotely without requiring local access or physical interaction, and a proof-of-concept exploit is publicly available.

Impact Analysis

Exploitation of this vulnerability can allow remote attackers to execute arbitrary code on the affected Tenda AC15 router or cause a denial of service.

This means attackers could potentially take control of the router, disrupt network connectivity, or compromise the confidentiality, integrity, and availability of the device.

Since the router is a critical network device, such compromise could affect all devices connected through it.

Compliance Impact

I don't know

Detection Guidance

There are no specific detection commands or network/system detection methods provided for this vulnerability in the available information.

Mitigation Strategies

No official vendor patch or advisory has been released for this vulnerability.

It is recommended to replace the affected product or firmware version to mitigate the risk.

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