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CVE-2026-6155— Totolink A7100RU CGI cstecgi.cgi setWanCfg os command injection

CVSS 9.8 · Critical EPSS 1.25% · P79
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I. Basic Information for CVE-2026-6155

Vulnerability Information
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Vulnerability Title
Totolink A7100RU CGI cstecgi.cgi setWanCfg os command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A weakness has been identified in Totolink A7100RU 7.4cu.2313. The impacted element is the function setWanCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Executing a manipulation of the argument pppoeServiceName can lead to os command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.
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 A7100RU 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TOTOLINK A7100RU是中国吉翁电子（TOTOLINK）公司的一款无线路由器。 TOTOLINK A7100RU 7.4cu.2313版本存在操作系统命令注入漏洞，该漏洞源于对组件CGI Handler的文件/cgi-bin/cstecgi.cgi中函数setWanCfg的参数pppoeServiceName操作不当，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
TotolinkA7100RU 7.4cu.2313 cpe:2.3:o:totolink:a7100ru_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-6155

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III. Intelligence Information for CVE-2026-6155

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Same Patch Batch · Totolink · 2026-04-13 · 11 CVEs total

CVE-2026-61959.8 CRITICALTotolink A7100RU CGI cstecgi.cgi setPasswordCfg os command injection
CVE-2026-61569.8 CRITICALTotolink A7100RU CGI cstecgi.cgi setIpQosRules os command injection
CVE-2026-61549.8 CRITICALTotolink A7100RU CGI cstecgi.cgi setWizardCfg os command injection
CVE-2026-61409.8 CRITICALTotolink A7100RU CGI cstecgi.cgi UploadFirmwareFile os command injection
CVE-2026-61399.8 CRITICALTotolink A7100RU CGI cstecgi.cgi UploadOpenVpnCert os command injection
CVE-2026-61389.8 CRITICALTotolink A7100RU CGI cstecgi.cgi setAccessDeviceCfg os command injection
CVE-2026-61948.8 HIGHTotolink A3002MU HTTP Request formWlanSetup sub_410188 stack-based overflow
CVE-2026-61688.8 HIGHTOTOLINK A7000R cstecgi.cgi setWiFiEasyGuestCfg stack-based overflow
CVE-2026-61578.8 HIGHTotolink A800R app.so setAppEasyWizardConfig buffer overflow
CVE-2026-61587.3 HIGHTotolink N300RH upgrade.so setUpgradeUboot os command injection

IV. Related Vulnerabilities

Same product: A7100RU
Same vendor: Totolink
Same weakness: CWE-78

V. Comments for CVE-2026-6155

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