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CVE-2026-6154— Totolink A7100RU CGI cstecgi.cgi setWizardCfg os command injection

Quick assessment

Affected
Totolink A7100RU
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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_b20191024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setWizardCfg的参数wizard操作不当，可能导致os命令注入。

CVSS 9.8 · Critical EPSS 1.82% · P77
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I. Basic Information for CVE-2026-6154

Vulnerability Information
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Vulnerability Title
Totolink A7100RU CGI cstecgi.cgi setWizardCfg os command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in Totolink A7100RU 7.4cu.2313_b20191024. The affected element is the function setWizardCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Performing a manipulation of the argument wizard results in os command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
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_b20191024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setWizardCfg的参数wizard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

Vendor Product Affected Versions CPE Subscribe
Totolink A7100RU 7.4cu.2313_b20191024 cpe:2.3:o:totolink:a7100ru_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-6154

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III. Intelligence Information for CVE-2026-6154

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Security Blog Posts for CVE-2026-6154 (1)

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

CVE-2026-6195 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi setPasswordCfg os command injection
CVE-2026-6156 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi setIpQosRules os command injection
CVE-2026-6155 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi setWanCfg os command injection
CVE-2026-6140 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi UploadFirmwareFile os command injection
CVE-2026-6139 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi UploadOpenVpnCert os command injection
CVE-2026-6138 9.8 CRITICAL Totolink A7100RU CGI cstecgi.cgi setAccessDeviceCfg os command injection
CVE-2026-6194 8.8 HIGH Totolink A3002MU HTTP Request formWlanSetup sub_410188 stack-based overflow
CVE-2026-6168 8.8 HIGH TOTOLINK A7000R cstecgi.cgi setWiFiEasyGuestCfg stack-based overflow
CVE-2026-6157 8.8 HIGH Totolink A800R app.so setAppEasyWizardConfig buffer overflow
CVE-2026-6158 7.3 HIGH Totolink N300RH upgrade.so setUpgradeUboot os command injection

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-6154

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