CVE-2026-5685
Received Received - Intake

Stack-Based Buffer Overflow in Tenda CX12L Remote Function

Vulnerability report for CVE-2026-5685, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-04-06

Last updated on: 2026-04-29

Assigner: VulDB

Description

A vulnerability was identified in Tenda CX12L 16.03.53.12. This affects the function fromAddressNat of the file /goform/addressNat. The manipulation of the argument page leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit is publicly available and might be used.

CVSS Scores

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Meta Information

Published
2026-04-06
Last Modified
2026-04-29
Generated
2026-07-06
AI Q&A
2026-04-07
EPSS Evaluated
2026-07-05
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
tenda cx12l_firmware 16.03.53.12

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.

Attack-Flow Graph

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Executive Summary

This vulnerability exists in the Tenda CX12L device, specifically in the function fromAddressNat within the file /goform/addressNat. It is caused by improper handling of the argument 'page', which leads to a stack-based buffer overflow. This means that an attacker can send specially crafted input remotely to overflow the buffer on the stack, potentially allowing them to execute arbitrary code or cause the device to crash.

Impact Analysis

The vulnerability can be exploited remotely without user interaction, which makes it particularly dangerous. Successful exploitation could allow an attacker to execute arbitrary code on the affected device, leading to potential full compromise. This could result in denial of service, unauthorized access, or control over the device.

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