🔴 Critical | Source: The Hacker News
Multiple Tenda router firmware versions contain a hidden backdoor (CVE-2026-11405) that allows an attacker to bypass password authentication and gain full administrative access to the device’s web management interface. The backdoor is undocumented, meaning it was not disclosed by the manufacturer, raising concerns about intentional insertion. This poses a significant risk to any network where Tenda devices are deployed, particularly in environments where router management interfaces are internet-facing.
Security Architect’s Take: Audit your infrastructure and supply chain for any Tenda networking equipment immediately — if found, isolate the management interface from public and untrusted networks at the firewall level and apply any available firmware patches. If no patch exists, consider replacing affected devices, particularly in environments handling sensitive workloads or where network-edge security is critical.
Original advisory: CERT/CC Warns of Hidden Admin Backdoor in Tenda Router Firmware