CVE-2019-16160: MikroTik RouterOS

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

An integer underflow in the SMB server of MikroTik RouterOS before 6.45.5 allows remote unauthenticated attackers to crash the service.

Affected products

• MikroTik RouterOS: before 6.45.5 (fixed in 6.45.5)

Published 2020-10-07. Last modified 2026-06-17.