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5 CVEs HIGH CVSS 8.9

Totolink A7100RU Command Injection

2026-04-10

CVE-2026-6028 HIGH POC

Remote unauthenticated OS command injection in Totolink A7100RU router firmware 7.4cu.2313_b20191024 enables complete system compromise. Attackers exploit the setPptpServerCfg function in /cgi-bin/cstecgi.cgi CGI handler by injecting malicious commands through the 'enable' parameter. CVSS 9.8 critical severity reflects network-accessible attack requiring no privileges or user interaction. Publicly available exploit code exists, significantly lowering exploitation barrier for remote attackers seeking router takeover, data exfiltration, or network pivoting.

8.9
CVSS
0.9%
EPSS
CVE-2026-6027 HIGH POC

OS command injection in Totolink A7100RU router firmware 7.4cu.2313_b20191024 enables unauthenticated remote attackers to execute arbitrary system commands via the 'enable' parameter in the setUrlFilterRules function of /cgi-bin/cstecgi.cgi. Exploitation requires no user interaction, granting complete device compromise with potential for lateral network movement. Publicly available exploit code exists (GitHub POC). CVSS 9.8 severity reflects network-accessible attack vector with no privilege requirements.

8.9
CVSS
0.9%
EPSS
CVE-2026-6025 HIGH POC

Remote unauthenticated OS command injection in Totolink A7100RU router version 7.4cu.2313_b20191024 allows arbitrary command execution via the setSyslogCfg function in /cgi-bin/cstecgi.cgi. Attackers exploit the 'enable' parameter without authentication to achieve full system compromise. CVSS 9.8 critical severity reflects network accessibility, no complexity barriers, and complete confidentiality/integrity/availability impact. Publicly available exploit code exists, significantly lowering attack barrier for opportunistic scanning campaigns targeting consumer routers.

8.9
CVSS
0.9%
EPSS
CVE-2026-6029 HIGH POC

OS command injection in Totolink A7100RU router firmware 7.4cu.2313_b20191024 allows unauthenticated remote attackers to execute arbitrary system commands via the User parameter in setVpnAccountCfg function at /cgi-bin/cstecgi.cgi endpoint. CVSS 9.8 critical severity with publicly available exploit code documented on GitHub. No authentication, low complexity, network-accessible attack vector enables full system compromise with high confidentiality, integrity, and availability impact.

8.9
CVSS
0.9%
EPSS
CVE-2026-6026 HIGH POC

Remote OS command injection in Totolink A7100RU router firmware 7.4cu.2313_b20191024 allows unauthenticated attackers to execute arbitrary system commands. The vulnerability resides in the setPortalConfWeChat function within /cgi-bin/cstecgi.cgi, exploitable by manipulating the 'enable' parameter. CVSS 9.8 severity reflects network-accessible attack vector requiring no authentication or user interaction, with full system compromise potential. Publicly available exploit code exists, significantly lowering exploitation barrier for remote attackers targeting vulnerable router deployments.

8.9
CVSS
0.9%
EPSS

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