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CVE-2026-4043— Tenda i12 wifiSSIDget formwrlSSIDget stack-based overflow

Quick assessment

Affected
Tenda i12
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 i12是中国腾达（Tenda）公司的一款腾达吸顶式无线接入点。 Tenda i12 1.0.0.6(2204)版本存在安全漏洞，该漏洞源于文件/goform/wifiSSIDget的函数formwrlSSIDget对参数index的错误操作，可能导致栈缓冲区溢出。

CVSS 8.8 · High EPSS 0.99% · P61

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-4043

Vulnerability Information
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Vulnerability Title
Tenda i12 wifiSSIDget formwrlSSIDget stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in Tenda i12 1.0.0.6(2204). The impacted element is the function formwrlSSIDget of the file /goform/wifiSSIDget. Such manipulation of the argument index leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.
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 i12 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda i12是中国腾达（Tenda）公司的一款腾达吸顶式无线接入点。 Tenda i12 1.0.0.6(2204)版本存在安全漏洞，该漏洞源于文件/goform/wifiSSIDget的函数formwrlSSIDget对参数index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 i12 1.0.0.6(2204) cpe:2.3:o:tenda:i12_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-4043

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8098 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
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III. Intelligence Information for CVE-2026-4043

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Vendor Advisories for CVE-2026-4043 (2)

Other References for CVE-2026-4043 (1)

Same Patch Batch · Tenda · 2026-03-12 · 12 CVEs total

CVE-2026-4042 8.8 HIGH Tenda i12 WifiMacFilterGet formWifiMacFilterGet stack-based overflow
CVE-2026-4041 8.8 HIGH Tenda i12 exeCommand vos_strcpy stack-based overflow
CVE-2026-4008 8.8 HIGH Tenda W3 POST Parameter wifiSSIDset stack-based overflow
CVE-2026-4007 8.8 HIGH Tenda W3 POST Parameter wifiSSIDget stack-based overflow
CVE-2026-3976 8.8 HIGH Tenda W3 POST Parameter WifiMacFilterSet formWifiMacFilterSet stack-based overflow
CVE-2026-3975 8.8 HIGH Tenda W3 POST Parameter WifiMacFilterGet formWifiMacFilterGet stack-based overflow
CVE-2026-3974 8.8 HIGH Tenda W3 HTTP exeCommand formexeCommand stack-based overflow
CVE-2026-3973 8.8 HIGH Tenda W3 POST Parameter setAutoPing formSetAutoPing stack-based overflow
CVE-2026-3972 8.8 HIGH Tenda W3 HTTP setcfm formSetCfm stack-based overflow
CVE-2026-3971 8.8 HIGH Tenda i3 wifiSSIDset formwrlSSIDset stack-based overflow
CVE-2026-3970 8.8 HIGH Tenda i3 wifiSSIDget formwrlSSIDget stack-based overflow

IV. Related Vulnerabilities

Same product: i12
Same vendor: Tenda
Same weakness: CWE-121

V. Comments for CVE-2026-4043

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