CVE-2019-16160

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

CVE-2018-5951

An issue was discovered in Mikrotik RouterOS. Crafting a packet that has a size of 1 byte and sending it to an IPv6 address of a RouterOS box with IP Protocol 97 will cause RouterOS to reboot imminently. All versions of RouterOS that supports EoIPv6 are vulnerable to this attack.

CVE-2019-3981

MikroTik Winbox 3.20 and below is vulnerable to man in the middle attacks. A man in the middle can downgrade the client's authentication protocol and recover the user's username and MD5 hashed password.