Critical · published October 27, 2025
🚨 A shocking misstep exposes MikroTik RouterOS and SwOS users to a world of hurt! The WebFig management interface is chillingly available over cleartext HTTP by default. 🔥 Think of this like a bank teller discussing sensitive client information out loud in a crowded café—everyone nearby can hear everything, making it a breeze for a confident eavesdropper to step in and steal crucial data. An attacker situated anywhere on the network could execute malicious JavaScript in the administrator's browser, allowing them to intercept login credentials and sensitive config details. This means your router's control could slide right into hostile hands, leading to devastating breaches and loss of control over your network.
Think of this like a bank teller discussing sensitive client information out loud in a crowded café—everyone nearby can hear everything, making it a breeze for a confident eavesdropper to step in and steal crucial data. This vulnerability arises because the WebFig management interface is exposed using unencrypted HTTP instead of HTTPS, enabling an on-path attacker to inject scripts and capture sensitive information from the administrator's session.
An attacker situated anywhere on the network could execute malicious JavaScript in the administrator's browser, allowing them to intercept login credentials and sensitive config details. This means your router's control could slide right into hostile hands, leading to devastating breaches and loss of control over your network. To protect yourself, upgrade MikroTik RouterOS to version 7.14.3 or later and SwOS to version 2.19 or later. Additionally, ensure to configure the management interfaces to use HTTPS to encrypt all communications securely. 🛡️ You've got this! By following these steps, you're on your way to reinforcing your defenses and securing your network! 💪✨