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CVE-2026-3301

HIGH CVSS 4.0: 8.9 EPSS 1.01%
Updated Feb 27, 2026
Totolink
Parameter Value
CVSS 8.9 (HIGH)
Type CWE-77 (Command Injection), CWE-78 (OS Command Injection)
Vendor Totolink
Public PoC No

A security flaw has been discovered in Totolink N300RH 6.1c.1353_B20190305. Affected by this vulnerability is the function setWebWlanIdx of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument webWlanIdx results in os command injection.

The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks.

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

Vulnerable Products 3

Configuration From (including) Up to (excluding)
Totolink N300rh_Firmware
cpe:2.3:o:totolink:n300rh_firmware:6.1c.1349_b20181018:*:*:*:*:*:*:*
Totolink N300rh_Firmware
cpe:2.3:o:totolink:n300rh_firmware:6.1c.1353_b20190305:*:*:*:*:*:*:*
Totolink N300rh
cpe:2.3:h:totolink:n300rh:4.0:*:*:*:*:*:*:*