CVE-2018-10070: MikroTik Router Firmware

High severity, CVSS 7.5. EPSS: 12.5% chance of exploitation in the next 30 days.

A vulnerability in MikroTik Version 6.41.4 could allow an unauthenticated remote attacker to exhaust all available CPU and all available RAM by sending a crafted FTP request on port 21 that begins with many '\0' characters, preventing the affected router from accepting new FTP connections. The router will reboot after 10 minutes, logging a "router was rebooted without proper shutdown" message.

Affected products

• MikroTik Router Firmware: version 6.41.4 only

Published 2018-04-16. Last modified 2026-06-17.