CVE-2026-4493— Tenda A18 Pro MAC Filtering Configuration Endpoint setMacFilterCfg sub_423B50 stack-based overflow
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I. Basic Information for CVE-2026-4493
Vulnerability Information
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Vulnerability Title
Tenda A18 Pro MAC Filtering Configuration Endpoint setMacFilterCfg sub_423B50 stack-based overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was determined in Tenda A18 Pro 02.03.02.28. The impacted element is the function sub_423B50 of the file /goform/setMacFilterCfg of the component MAC Filtering Configuration Endpoint. Executing a manipulation of the argument deviceList can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Tenda A18 Pro 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda A18 Pro是中国腾达（Tenda）公司的一款无线信号扩展器。 Tenda A18 Pro 02.03.02.28版本存在安全漏洞，该漏洞源于组件MAC Filtering Configuration Endpoint的文件/goform/setMacFilterCfg中函数sub_423B50对参数deviceList的操作存在栈缓冲区溢出。
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
II. Public POCs for CVE-2026-4493
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- Submit #773727: Tenda A18pro V02.03.02.28 Stack-based Buffer Overflowthird-party-advisory
- CVE-2026-4493 Tenda A18 Pro MAC Filtering Configuration Endpoint setMacFilterCfg sub_423B50 stack-based overflowvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-4493
Same Patch Batch · Tenda · 2026-03-20 · 5 CVEs total
| CVE-2026-4492 | 8.8 HIGH | Tenda A18 Pro formSetQosBand set_qosMib_list stack-based overflow |
| CVE-2026-4491 | 8.8 HIGH | Tenda A18 Pro SetIpMacBind fromSetIpMacBind stack-based overflow |
| CVE-2026-4490 | 8.8 HIGH | Tenda A18 Pro openSchedWifi setSchedWifi stack-based overflow |
| CVE-2026-4489 | 8.8 HIGH | Tenda A18 Pro fast_setting_wifi_set form_fast_setting_wifi_set stack-based overflow |
IV. Related Vulnerabilities
Same product: A18 Pro
Same vendor: Tenda
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V. Comments for CVE-2026-4493
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