---
id: CVE-2026-5685
title: A vulnerability was identified in Tenda CX12L 16.03.53.12
summary: >-
  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 r…
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-2026-5685'
references:
  - url: 'https://github.com/cve-a/lvdan/issues/3'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/792782'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355512'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/355512/cti'
    label: cna@vuldb.com
  - url: 'https://www.tenda.com.cn/'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.00694
epssPercentile: 0.51531
ingestedAt: '2026-07-24T09:23:52.426Z'
---

## Overview

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.

## Affected

- `cx12l_firmware = 16.03.53.12`

## Remediation

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