CVE-2026-5686
Received Received - Intake
Stack-Based Buffer Overflow in Tenda CX12L Remote RouteStatic

Publication date: 2026-04-06

Last updated on: 2026-04-29

Assigner: VulDB

Description
A security flaw has been discovered in Tenda CX12L 16.03.53.12. This vulnerability affects the function fromRouteStatic of the file /goform/RouteStatic. The manipulation of the argument page results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.
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Meta Information
Published
2026-04-06
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-04-07
EPSS Evaluated
2026-06-15
NVD
CVE-2026-5686
EUVD
EUVD-2026-19543
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-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 security flaw found in the Tenda CX12L router firmware version 16.03.53.12. It exists in the function fromRouteStatic within the file /goform/RouteStatic. The issue arises from 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 causing unexpected behavior or allowing execution of malicious code.

Impact Analysis

The vulnerability can be exploited remotely without user interaction, allowing an attacker to cause a stack-based buffer overflow. This can lead to severe consequences such as executing arbitrary code, disrupting the normal operation of the device, or gaining unauthorized access. Because the exploit has been publicly released, the risk of attacks leveraging this vulnerability is increased.

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