CVE-2020-14074: TRENDnet Tew-827dru Firmware

High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days.

TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an authenticated user to execute arbitrary code by POSTing to apply.cgi via the action kick_ban_wifi_mac_allow with a sufficiently long qcawifi.wifi0_vap0.maclist key.

Affected products

• TRENDnet Tew-827dru Firmware: up to and including 2.06b04

Published 2020-06-15. Last modified 2026-06-17.