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CVE-2026-5103

MEDIUM CVSS 4.0: 5.3 EPSS 2.16%
Updated Mar 30, 2026
Totolink
Parameter Value
CVSS 5.3 (MEDIUM)
Type CWE-77 (Command Injection), CWE-74 (Injection)
Vendor Totolink
Public PoC No

A weakness has been identified in Totolink A3300R 17.0.0cu.557_b20221024. This issue affects the function setUPnPCfg of the file /cgi-bin/cstecgi.cgi. This manipulation of the argument enable causes command injection.

The attack is possible to be carried out remotely. The exploit has been made available to the public and could 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
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption

CVSS Vector v4.0

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Totolink A3300r_Firmware
cpe:2.3:o:totolink:a3300r_firmware:17.0.0cu.557_b20221024:*:*:*:*:*:*:*
Totolink A3300r
cpe:2.3:h:totolink:a3300r:-:*:*:*:*:*:*:*