CVE-2026-9434: OS Command Injection in Totolink A8000RU
A security vulnerability has been detected in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setWiFiWpsCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument wscDisabled leads to os command injection. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.
AI Analysis
Technical Summary
This vulnerability allows remote attackers to perform OS command injection via the wscDisabled parameter in the setWiFiWpsCfg function of the Web Management Interface CGI script (/cgi-bin/cstecgi.cgi) on Totolink A8000RU devices running firmware version 7.1cu.643_b20200521. The issue arises from insufficient input validation, enabling execution of arbitrary commands on the underlying operating system. The vulnerability is remotely exploitable without authentication and has a CVSS 4.0 base score of 9.3, reflecting its critical severity and ease of exploitation.
Potential Impact
Successful exploitation could allow an unauthenticated remote attacker to execute arbitrary OS commands on the affected device, potentially leading to full compromise of the router. This could disrupt network operations, allow data interception or manipulation, and facilitate further attacks within the network environment. No known active exploitation has been reported yet.
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 Web Management Interface from untrusted networks and disable WPS functionality if possible to reduce exposure. Monitor vendor channels for updates and apply patches promptly when available.
CVE-2026-9434: OS Command Injection in Totolink A8000RU
Description
A security vulnerability has been detected in Totolink A8000RU 7.1cu.643_b20200521. Impacted is the function setWiFiWpsCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Such manipulation of the argument wscDisabled leads to os command injection. The attack may be launched remotely. The exploit has been disclosed publicly and may be used.
CVSS v4.0
Score 9.3critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability allows remote attackers to perform OS command injection via the wscDisabled parameter in the setWiFiWpsCfg function of the Web Management Interface CGI script (/cgi-bin/cstecgi.cgi) on Totolink A8000RU devices running firmware version 7.1cu.643_b20200521. The issue arises from insufficient input validation, enabling execution of arbitrary commands on the underlying operating system. The vulnerability is remotely exploitable without authentication and has a CVSS 4.0 base score of 9.3, reflecting its critical severity and ease of exploitation.
Potential Impact
Successful exploitation could allow an unauthenticated remote attacker to execute arbitrary OS commands on the affected device, potentially leading to full compromise of the router. This could disrupt network operations, allow data interception or manipulation, and facilitate further attacks within the network environment. No known active exploitation has been reported yet.
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 Web Management Interface from untrusted networks and disable WPS functionality if possible to reduce exposure. Monitor vendor channels for updates and apply patches promptly when available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-05-24T07:07:27.282Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a13eec0a5ae1af1aa6777de
Added to database: 05/25/2026, 06:40:00 UTC
Last enriched: 06/01/2026, 20:22:08 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 114
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