---
id: CVE-2026-5687
title: A weakness has been identified in Tenda CX12L 16.03.53.12
summary: >-
  A weakness has been identified in Tenda CX12L 16.03.53.12. This issue affects
  the function fromNatStaticSetting of the file /goform/NatStaticSetting. This
  manipulation of the argument page causes stack-based buffer overflow. The
  attack m…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-119
  - CWE-121
vendor: tenda
product: cx12l_firmware
affected:
  - cx12l_firmware = 16.03.53.12
published: '2026-04-06'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-5687'
references:
  - url: 'https://github.com/cve-a/lvdan/issues/5'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/792785'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355514'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355514/cti'
    label: cna@vuldb.com
  - url: 'https://www.tenda.com.cn/'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.00987
epssPercentile: 0.6085
ingestedAt: '2026-07-24T09:23:52.476Z'
---

## Overview

A weakness has been identified in Tenda CX12L 16.03.53.12. This issue affects the function fromNatStaticSetting of the file /goform/NatStaticSetting. This manipulation of the argument page causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

## Affected

- `cx12l_firmware = 16.03.53.12`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.