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CVE-2024-4236— Tenda AX1803 SetDDNSCfg formSetSysToolDDNS stack-based overflow

Quick assessment

Affected
Tenda AX1803
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 AX1803是中国腾达（Tenda）公司的一款双频千兆WIFI6路由器。 Tenda AX1803 1.0.0.1版本存在安全漏洞，该漏洞源于对参数 serverName/ddnsUser/ddnsPwd/ddnsDomain 的错误操作会导致基于堆栈的缓冲区溢出。

CVSS 8.8 · High EPSS 14.88% · P97

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-4236

Vulnerability Information
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Vulnerability Title
Tenda AX1803 SetDDNSCfg formSetSysToolDDNS stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability, which was classified as critical, has been found in Tenda AX1803 1.0.0.1. This issue affects the function formSetSysToolDDNS of the file /goform/SetDDNSCfg. The manipulation of the argument serverName/ddnsUser/ddnsPwd/ddnsDomain leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-262127. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
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 AX1803 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda AX1803是中国腾达（Tenda）公司的一款双频千兆WIFI6路由器。 Tenda AX1803 1.0.0.1版本存在安全漏洞，该漏洞源于对参数 serverName/ddnsUser/ddnsPwd/ddnsDomain 的错误操作会导致基于堆栈的缓冲区溢出。
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 AX1803 1.0.0.1 -

II. Public POCs for CVE-2024-4236

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 8487 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2024-4236

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Vendor Advisories for CVE-2024-4236 (3)

Other References for CVE-2024-4236 (1)

Same Patch Batch · Tenda · 2024-04-26 · 9 CVEs total

CVE-2024-4244 8.8 HIGH Tenda W9 DhcpSetSer fromDhcpSetSer stack-based overflow
CVE-2024-4243 8.8 HIGH Tenda W9 wifiSSIDset formwrlSSIDset stack-based overflow
CVE-2024-4242 8.8 HIGH Tenda W9 wifiSSIDget formwrlSSIDget stack-based overflow
CVE-2024-4241 8.8 HIGH Tenda W9 formQosManageDouble_auto stack-based overflow
CVE-2024-4240 8.8 HIGH Tenda W9 formQosManageDouble_user stack-based overflow
CVE-2024-4239 8.8 HIGH Tenda AX1806 SetRebootTimer formSetRebootTimer stack-based overflow
CVE-2024-4238 8.8 HIGH Tenda AX1806 SetOnlineDevName formSetDeviceName stack-based overflow
CVE-2024-4237 8.8 HIGH Tenda AX1806 execCommand R7WebsSecurityHandler stack-based overflow

IV. Related Vulnerabilities

Same product: AX1803
Same vendor: Tenda
Same weakness: CWE-121

V. Comments for CVE-2024-4236

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