CVE-2026-7153: OS Command Injection in Totolink A8000RU
CVE-2026-7153 is a critical OS command injection vulnerability in the Totolink A8000RU router firmware version 7.1cu.643_b20200521. The flaw exists in the setMiniuiHomeInfoShow function within the /cgi-bin/cstecgi.cgi CGI handler. An attacker can remotely manipulate the sys_info argument to execute arbitrary operating system commands. Exploit code has been publicly released, increasing the risk of attacks. No official patch or remediation guidance is currently available from the vendor.
AI Analysis
Technical Summary
This vulnerability affects the Totolink A8000RU router firmware 7.1cu.643_b20200521. The issue lies in the CGI handler component, specifically the setMiniuiHomeInfoShow function in /cgi-bin/cstecgi.cgi. By manipulating the sys_info parameter, an unauthenticated remote attacker can perform OS command injection, potentially leading to full system compromise. The CVSS 4.0 base score is 9.3, reflecting the critical severity and ease of exploitation without privileges or user interaction. Public exploit code has been released, but no vendor patch or mitigation details are currently provided.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary OS commands on the affected device without authentication, potentially leading to full control over the router. This can compromise network security, disrupt services, or facilitate further attacks within the network environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting remote access to the device's management interface and monitoring for unusual activity. Avoid exposing the device's CGI interfaces to untrusted networks.
CVE-2026-7153: OS Command Injection in Totolink A8000RU
Description
CVE-2026-7153 is a critical OS command injection vulnerability in the Totolink A8000RU router firmware version 7.1cu.643_b20200521. The flaw exists in the setMiniuiHomeInfoShow function within the /cgi-bin/cstecgi.cgi CGI handler. An attacker can remotely manipulate the sys_info argument to execute arbitrary operating system commands. Exploit code has been publicly released, increasing the risk of attacks. No official patch or remediation guidance is currently available from the vendor.
CVSS v4.0
Score 9.3critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the Totolink A8000RU router firmware 7.1cu.643_b20200521. The issue lies in the CGI handler component, specifically the setMiniuiHomeInfoShow function in /cgi-bin/cstecgi.cgi. By manipulating the sys_info parameter, an unauthenticated remote attacker can perform OS command injection, potentially leading to full system compromise. The CVSS 4.0 base score is 9.3, reflecting the critical severity and ease of exploitation without privileges or user interaction. Public exploit code has been released, but no vendor patch or mitigation details are currently provided.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary OS commands on the affected device without authentication, potentially leading to full control over the router. This can compromise network security, disrupt services, or facilitate further attacks within the network environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting remote access to the device's management interface and monitoring for unusual activity. Avoid exposing the device's CGI interfaces to untrusted networks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-04-26T20:08:08.192Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69efc04fba26a39fba5c0c38
Added to database: 4/27/2026, 8:00:15 PM
Last enriched: 5/5/2026, 7:39:03 AM
Last updated: 6/12/2026, 4:05:23 AM
Views: 76
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