A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due to improper neutralization of special elements used in an OS command. In the router configuration import function allows an authenticated attacker to upload a crafted configuration file that results in execution of OS commands with root privileges during port-trigger processing.
Successful exploitation allows an authenticated attacker to execute system commands with root privileges, leading to full device compromise.
Attack Parameters
Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
High
Admin 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
Weakness Type (CWE)
References 6
https://www.tp-link.com/en/support/download/tl-wr802n/v4/#Firmware
f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/en/support/download/tl-wr840n/v6/#Firmware
f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/en/support/download/tl-wr841n/v14/#Firmware
f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/download/tl-wr802n/v4/#Firmware
f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware
f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/faq/5018/
f23511db-6c3e-4e32-a477-6aa17d310630