CVE-2020-20267: MikroTik RouterOS

Medium severity, CVSS 6.5. EPSS: 1.7% chance of exploitation in the next 30 days.

Mikrotik RouterOs before 6.47 (stable tree) suffers from a memory corruption vulnerability in the /nova/bin/resolver process. An authenticated remote attacker can cause a Denial of Service due to invalid memory access.

Affected products

• MikroTik RouterOS: before 6.47 (fixed in 6.47)

Published 2021-05-11. Last modified 2026-06-17.