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CVE-2024-4496— Tenda i21 formWifiMacFilterSet stack-based overflow

Quick assessment

Affected
Tenda i21
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 i21是中国腾达（Tenda）公司的一款无线接入点。 Tenda i21 1.0.0.14(4656)版本存在安全漏洞，该漏洞源于函数formWifiMacFilterSet的参数ssidIndex会导致基于堆栈的缓冲区溢出。

CVSS 8.8 · High EPSS 1.45% · P73

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-4496

Vulnerability Information
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Vulnerability Title
Tenda i21 formWifiMacFilterSet stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Tenda i21 1.0.0.14(4656). It has been classified as critical. This affects the function formWifiMacFilterSet. The manipulation of the argument ssidIndex leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-263085 was assigned to this vulnerability. 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 i21 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda i21是中国腾达（Tenda）公司的一款无线接入点。 Tenda i21 1.0.0.14(4656)版本存在安全漏洞，该漏洞源于函数formWifiMacFilterSet的参数ssidIndex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 i21 1.0.0.14(4656) -

II. Public POCs for CVE-2024-4496

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 7145 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-2024-4496

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Vendor Advisories for CVE-2024-4496 (3)

Other References for CVE-2024-4496 (1)

Same Patch Batch · Tenda · 2024-05-05 · 6 CVEs total

CVE-2024-4492 8.8 HIGH Tenda i21 setStaOffline formOfflineSet stack-based overflow
CVE-2024-4493 8.8 HIGH Tenda i21 formSetAutoPing stack-based overflow
CVE-2024-4494 8.8 HIGH Tenda i21 setUplinkInfo formSetUplinkInfo stack-based overflow
CVE-2024-4495 8.8 HIGH Tenda i21 formWifiMacFilterGet stack-based overflow
CVE-2024-4497 8.8 HIGH Tenda i21 formexeCommand stack-based overflow

IV. Related Vulnerabilities

Same product: i21
Same vendor: Tenda
Same weakness: CWE-121

V. Comments for CVE-2024-4496

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