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I. Basic Information for CVE-2026-1638
Vulnerability Information

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Vulnerability Title
Tenda AC21 mDMZSetCfg command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A security flaw has been discovered in Tenda AC21 1.1.1.1/1.dmzip/16.03.08.16. The impacted element is the function mDMZSetCfg of the file /goform/mDMZSetCfg. The manipulation of the argument dmzIp results in command injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Tenda AC21 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda AC21是中国腾达(Tenda)公司的一款无线路由器。 Tenda AC21 1.1.1.1/1.dmzip/16.03.08.16版本存在命令注入漏洞,该漏洞源于对文件/goform/mDMZSetCfg中参数dmzIp的错误操作,可能导致命令注入。
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
VendorProductAffected VersionsCPESubscribe
TendaAC21 1.1.1.1 cpe:2.3:o:tenda:ac21_firmware:*:*:*:*:*:*:*:*
II. Public POCs for CVE-2026-1638
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III. Intelligence Information for CVE-2026-1638
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IV. Related Vulnerabilities
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