This update for mysql to version 5.5.61 fixes the following issues: The following security vulnerabilities were addressed: - CVE-2018-3066: Fixed a difficult to exploit vulnerability that allowed high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of MySQL Server accessible data as well as unauthorized read access to a subset of MySQL Server accessible data. - CVE-2018-3070: Fixed an easily exploitable vulnerability that allowed low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash of MySQL Server. - CVE-2018-3081: Fixed a difficult to exploit vulnerability that allowed high privileged attacker with network access via multiple protocols to compromise MySQL Client. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash of MySQL Client as well as unauthorized update, insert or delete access to some of MySQL Client accessible data. - CVE-2018-3058: Fixed an easily exploitable vulnerability that allowed low privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of MySQL Server accessible data. - CVE-2018-3063: Fixed an easily exploitable vulnerability allowed high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash of MySQL Server. You can find more detailed information about this update in the [release notes]