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CVE-2025-14526— Tenda CH22 L7Im frmL7ImForm buffer 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，该漏洞源于文件/goform/L7Im中函数frmL7ImForm对参数page的错误操作，可能导致缓冲区溢出。

CVSS 8.8 · High EPSS 0.76% · P54

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-14526

Vulnerability Information
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Vulnerability Title
Tenda CH22 L7Im frmL7ImForm buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Tenda CH22 1.0.0.1. This affects the function frmL7ImForm of the file /goform/L7Im. Performing a manipulation of the argument page results in buffer overflow. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.
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
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
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，该漏洞源于文件/goform/L7Im中函数frmL7ImForm对参数page的错误操作，可能导致缓冲区溢出。
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-2025-14526

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7030 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2025-14526

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Vendor Advisories for CVE-2025-14526 (3)

Other References for CVE-2025-14526 (2)

IV. Related Vulnerabilities

Same product: CH22
Same vendor: Tenda
Same weakness: CWE-120

V. Comments for CVE-2025-14526

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