CVE-2026-3227: Authenticated Command Injection on TP-Link TL-WR802N, TL-WR841N and TL-WR840N
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3227?
The severity of CVE-2026-3227 is classified as high due to the possibility of authenticated command injection.
How do I fix CVE-2026-3227?
To fix CVE-2026-3227, update the firmware of TP-Link devices TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 to the latest version released by TP-Link.
Which devices are affected by CVE-2026-3227?
CVE-2026-3227 affects TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 devices.
What type of vulnerability is CVE-2026-3227?
CVE-2026-3227 is a command injection vulnerability in the router configuration import function.
Can CVE-2026-3227 be exploited remotely?
CVE-2026-3227 requires authentication, so it cannot be exploited remotely without valid access to the affected devices.