CVE-2020-20264: MikroTik RouterOS

Medium severity, CVSS 6.5. EPSS: 2.1% chance of exploitation in the next 30 days.

Mikrotik RouterOs before 6.47 (stable tree) in the /ram/pckg/advanced-tools/nova/bin/netwatch process. An authenticated remote attacker can cause a Denial of Service due to a divide by zero error.

Affected products

• MikroTik RouterOS: before 6.47 (fixed in 6.47)

Published 2021-05-19. Last modified 2026-06-17.