CVE-2026-6155: OS Command Injection in Totolink A7100RU
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.
AI Analysis
Technical Summary
The Totolink A7100RU router firmware 7.4cu.2313 contains an OS command injection vulnerability in the setWanCfg function of the /cgi-bin/cstecgi.cgi CGI handler. By manipulating the pppoeServiceName parameter, an unauthenticated remote attacker can execute arbitrary OS commands on the device. This vulnerability is remotely exploitable and has a CVSS 4.0 base score of 9.3, indicating critical severity. No official remediation or patch has been disclosed by the vendor, and the vulnerability state is published as of April 2026. Public exploit code is available, increasing the risk of attack.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to execute arbitrary operating system commands on the affected Totolink A7100RU device. This can lead to full compromise of the device, including unauthorized control, data disclosure, or disruption of network services. The vulnerability has a critical CVSS score of 9.3, reflecting its high impact and ease of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the device's management interface from untrusted networks to reduce exposure. Monitor vendor communications for updates on patches or official mitigations.
CVE-2026-6155: OS Command Injection in Totolink A7100RU
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.
CVSS v4.0
Score 9.3critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Totolink A7100RU router firmware 7.4cu.2313 contains an OS command injection vulnerability in the setWanCfg function of the /cgi-bin/cstecgi.cgi CGI handler. By manipulating the pppoeServiceName parameter, an unauthenticated remote attacker can execute arbitrary OS commands on the device. This vulnerability is remotely exploitable and has a CVSS 4.0 base score of 9.3, indicating critical severity. No official remediation or patch has been disclosed by the vendor, and the vulnerability state is published as of April 2026. Public exploit code is available, increasing the risk of attack.
Potential Impact
Successful exploitation allows an unauthenticated remote attacker to execute arbitrary operating system commands on the affected Totolink A7100RU device. This can lead to full compromise of the device, including unauthorized control, data disclosure, or disruption of network services. The vulnerability has a critical CVSS score of 9.3, reflecting its high impact and ease of exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the device's management interface from untrusted networks to reduce exposure. Monitor vendor communications for updates on patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-12T18:06:01.982Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69dc6ab182d89c981fecb362
Added to database: 4/13/2026, 4:01:53 AM
Last enriched: 4/20/2026, 6:07:05 AM
Last updated: 5/29/2026, 2:35:31 AM
Views: 95
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