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CVE-2026-7140— Totolink A8000RU CGI cstecgi.cgi CsteSystem os command injection

CVSS 9.8 · Critical EPSS 1.25% · P79
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I. Basic Information for CVE-2026-7140

Vulnerability Information
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Vulnerability Title
Totolink A8000RU CGI cstecgi.cgi CsteSystem os command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been found in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function CsteSystem of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument HTTP leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
TOTOLINK A8000RU 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A8000RU是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 Totolink A8000RU 7.1cu.643_b20200521版本存在命令注入漏洞，该漏洞源于CGI Handler组件中文件/cgi-bin/cstecgi.cgi的函数CsteSystem对参数HTTP的操作，可能导致os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)

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Affected Products

VendorProductAffected VersionsCPESubscribe
TotolinkA8000RU 7.1cu.643_b20200521 cpe:2.3:o:totolink:a8000ru_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-7140

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III. Intelligence Information for CVE-2026-7140

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Same Patch Batch · Totolink · 2026-04-27 · 16 CVEs total

CVE-2026-72029.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setWiFiWpsStart os command injection
CVE-2026-71569.8 CRITICALTotolink A8000RU CGI cstecgi.cgi CsteSystem os command injection
CVE-2026-71559.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setLoginPasswordCfg os command injection
CVE-2026-71549.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setAdvancedInfoShow os command injection
CVE-2026-71539.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setMiniuiHomeInfoShow os command injection
CVE-2026-71529.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setTelnetCfg os command injection
CVE-2026-71399.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setWiFiAclRules os command injection
CVE-2026-71389.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setNtpCfg os command injection
CVE-2026-71379.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setStorageCfg os command injection
CVE-2026-71369.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setDmzCfg os command injection
CVE-2026-71259.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setWiFiEasyCfg os command injection
CVE-2026-71249.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setIpv6LanCfg os command injection
CVE-2026-71239.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setIptvCfg os command injection
CVE-2026-71229.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setUPnPCfg os command injection
CVE-2026-71219.8 CRITICALTotolink A8000RU CGI cstecgi.cgi setWizardCfg os command injection

IV. Related Vulnerabilities

Same product: A8000RU
Same vendor: Totolink
Same weakness: CWE-78

V. Comments for CVE-2026-7140

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