---
id: CVE-2026-5204
title: A vulnerability was determined in Tenda CH22 1.0.0.1
summary: >-
  A vulnerability was determined in Tenda CH22 1.0.0.1. Affected is the function
  formWebTypeLibrary of the file /goform/webtypelibrary of the component
  Parameter Handler. This manipulation of the argument webSiteId causes
  stack-based buffe…
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
  - CWE-787
vendor: tenda
product: ch22_firmware
affected:
  - ch22_firmware = 1.0.0.1
published: '2026-03-31'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-5204'
references:
  - url: 'https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_49/README.md'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/780209'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/354332'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/354332/cti'
    label: cna@vuldb.com
  - url: 'https://www.tenda.com.cn/'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.01009
epssPercentile: 0.61483
ingestedAt: '2026-07-24T20:38:02.720Z'
---

## Overview

A vulnerability was determined in Tenda CH22 1.0.0.1. Affected is the function formWebTypeLibrary of the file /goform/webtypelibrary of the component Parameter Handler. This manipulation of the argument webSiteId causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.

## Affected

- `ch22_firmware = 1.0.0.1`

## Remediation

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