CVE-2020-20249: MikroTik RouterOS

Medium severity, CVSS 6.5. EPSS: 1.8% chance of exploitation in the next 30 days.

Mikrotik RouterOs before stable 6.47 suffers from a memory corruption vulnerability in the resolver process. By sending a crafted packet, an authenticated remote attacker can cause a Denial of Service.

Affected products

• MikroTik RouterOS: before 6.47 (fixed in 6.47)

Published 2021-07-19. Last modified 2026-06-17.