CVE-2026-6112: OS Command Injection in Totolink A7100RU
CVE-2026-6112 is a critical OS command injection vulnerability in the Totolink A7100RU router firmware version 7. 4cu. 2313_b20191024. The flaw exists in the setRadvdCfg function within the /cgi-bin/cstecgi. cgi CGI handler, where manipulation of the maxRtrAdvInterval argument allows remote attackers to execute arbitrary OS commands. This vulnerability can be exploited without authentication or user interaction. Although an exploit is publicly available, there is no confirmed patch or official remediation from the vendor at this time.
AI Analysis
Technical Summary
The Totolink A7100RU router firmware 7.4cu.2313_b20191024 contains an OS command injection vulnerability in the setRadvdCfg function of the /cgi-bin/cstecgi.cgi CGI handler. By manipulating the maxRtrAdvInterval parameter, an unauthenticated remote attacker can execute arbitrary operating system commands on the device. This vulnerability has a CVSS 4.0 base score of 9.3, indicating critical severity with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary OS commands on the affected device without authentication, potentially leading to full compromise of the router, including control over network traffic and device configuration. This can severely impact device confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the device's management interface and monitor for suspicious activity related to the vulnerable CGI endpoint. Avoid exposing the device management interface to untrusted networks.
CVE-2026-6112: OS Command Injection in Totolink A7100RU
Description
CVE-2026-6112 is a critical OS command injection vulnerability in the Totolink A7100RU router firmware version 7. 4cu. 2313_b20191024. The flaw exists in the setRadvdCfg function within the /cgi-bin/cstecgi. cgi CGI handler, where manipulation of the maxRtrAdvInterval argument allows remote attackers to execute arbitrary OS commands. This vulnerability can be exploited without authentication or user interaction. Although an exploit is publicly available, there is no confirmed patch or official remediation from the vendor at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Totolink A7100RU router firmware 7.4cu.2313_b20191024 contains an OS command injection vulnerability in the setRadvdCfg function of the /cgi-bin/cstecgi.cgi CGI handler. By manipulating the maxRtrAdvInterval parameter, an unauthenticated remote attacker can execute arbitrary operating system commands on the device. This vulnerability has a CVSS 4.0 base score of 9.3, indicating critical severity with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently available.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary OS commands on the affected device without authentication, potentially leading to full compromise of the router, including control over network traffic and device configuration. This can severely impact device confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the device's management interface and monitor for suspicious activity related to the vulnerable CGI endpoint. Avoid exposing the device management interface to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-11T08:17:59.227Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69db193e82d89c981fd6035a
Added to database: 4/12/2026, 4:02:06 AM
Last enriched: 4/12/2026, 4:16:56 AM
Last updated: 4/12/2026, 5:04:17 AM
Views: 4
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