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CVE-2026-6138

HIGH CVSS 4.0: 8.9 EPSS 1.25%
Updated Apr 13, 2026
Totolink
Parameter Value
CVSS 8.9 (HIGH)
Type CWE-77 (Command Injection), CWE-78 (OS Command Injection)
Vendor Totolink
Public PoC No

A flaw has been found in Totolink A7100RU 7.4cu.2313_b20191024. The impacted element is the function setAccessDeviceCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. This manipulation of the argument mac causes os command injection.

The attack can be initiated remotely. The exploit has been published and may be used.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0