MikroTik’s RouterOS has historically been targeted by several high-profile authentication bypass and privilege escalation vulnerabilities. These flaws often target the WinBox management service, which is used for graphical configuration of the devices. Key Vulnerabilities Explained CVE-2018-14847: Unauthenticated File Read/Write
- Never expose management interfaces to the internet. Use VPNs, VLANs, or at minimum, source IP whitelisting.
- Keep RouterOS on the long-term branch unless you need new features. LT updates are conservative and tested longer.
- Enable auto-upgrades or subscribe to security advisories. MikroTik publishes advisories at
https://mikrotik.com/support. - Use monitoring to alert on version changes or unexpected logins.
Essentially, the router was "tricked" into giving the attacker administrative access to the internal user database without ever asking for a password.
Mikrotik has released a patch for this vulnerability, which is available in RouterOS 6.44 and later versions. To protect your network, it is essential to upgrade to a patched version of RouterOS as soon as possible.
3. Block external access to management ports (Firewall rule):
Add to /ip firewall filter: