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CVE-2026-5604— Tenda CH22 Parameter CertLocalPrecreate formCertLocalPrecreate 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，该漏洞源于对参数standard的错误操作，可能导致栈缓冲区溢出攻击。

CVSS 8.8 · High EPSS 0.89% · P58

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-5604

Vulnerability Information
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Vulnerability Title
Tenda CH22 Parameter CertLocalPrecreate formCertLocalPrecreate stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Tenda CH22 1.0.0.1. The impacted element is the function formCertLocalPrecreate of the file /goform/CertLocalPrecreate of the component Parameter Handler. Performing a manipulation of the argument standard results in stack-based 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
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，该漏洞源于对参数standard的错误操作，可能导致栈缓冲区溢出攻击。
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-2026-5604

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8737 chars
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III. Intelligence Information for CVE-2026-5604

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Other References for CVE-2026-5604 (1)

Same Patch Batch · Tenda · 2026-04-05 · 7 CVEs total

CVE-2026-5548 8.8 HIGH Tenda AC10 httpd fromSysToolChangePwd stack-based overflow
CVE-2026-5550 8.8 HIGH Tenda AC10 httpd fromSysToolChangePwd stack-based overflow
CVE-2026-5567 8.8 HIGH Tenda M3 Destination setAdvPolicyData buffer overflow
CVE-2026-5605 8.8 HIGH Tenda CH22 WrlExtraSet formWrlExtraSet stack-based overflow
CVE-2026-5547 6.3 MEDIUM Tenda AC10 httpd formAddMacfilterRule os command injection
CVE-2026-5549 5.3 MEDIUM Tenda AC10 RSA 2048-bit Private Key privkeySrv.pem hard-coded key

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-5604

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