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CVE-2026-5156— Tenda CH22 Parameter QuickIndex formQuickIndex stack-based overflow

Quick assessment

Affected
Tenda CH22
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tenda CH22是中国腾达（Tenda）公司的一款网络设备。 Tenda CH22 1.0.0.1版本存在安全漏洞，该漏洞源于对文件/goform/QuickIndex中参数mit_linktype的错误操作，可能导致栈缓冲区溢出。

CVSS 8.8 · High EPSS 0.63% · P47
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I. Basic Information for CVE-2026-5156

Vulnerability Information
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Vulnerability Title
Tenda CH22 Parameter QuickIndex formQuickIndex stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in Tenda CH22 1.0.0.1. This impacts the function formQuickIndex of the file /goform/QuickIndex of the component Parameter Handler. This manipulation of the argument mit_linktype causes stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Tenda CH22 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda CH22是中国腾达（Tenda）公司的一款网络设备。 Tenda CH22 1.0.0.1版本存在安全漏洞，该漏洞源于对文件/goform/QuickIndex中参数mit_linktype的错误操作，可能导致栈缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tenda CH22 1.0.0.1 cpe:2.3:o:tenda:ch22_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5156

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7508 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
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POC zip download
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III. Intelligence Information for CVE-2026-5156

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Vendor Advisories for CVE-2026-5156 (1)

News Coverage for CVE-2026-5156 (1)

Same Patch Batch · Tenda · 2026-03-30 · 5 CVEs total

CVE-2026-5152 8.8 HIGH Tenda CH22 createFileName formCreateFileName stack-based overflow
CVE-2026-5154 8.8 HIGH Tenda CH22 Parameter setcfm fromSetCfm stack-based overflow
CVE-2026-5155 8.8 HIGH Tenda CH22 Parameter AdvSetWan fromAdvSetWan stack-based overflow
CVE-2026-5153 6.3 MEDIUM Tenda CH22 WriteFacMac FormWriteFacMac command injection

IV. Related Vulnerabilities

Same product: CH22
Same vendor: Tenda
Same weakness: CWE-121

V. Comments for CVE-2026-5156

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