Wi-Fi AP UNIT AC-PD-WAPU v1.05_B04 and earlier, AC-PD-WAPUM v1.05_B04 and earlier, AC-PD-WAPU-P v1.05_B04P and earlier, AC-PD-WAPUM-P v1.05_B04P and earlier, AC-WAPU-300 v1.00_B07 and earlier, AC-WAPU-300-P v1.00_B08P and earlier, AC-WAPUM-300 v1.00_B07 and earlier, and AC-WAPUM-300-P v1.00_B08P and earlier allow an authenticated user with an administrative privilege to execute an arbitrary OS command.