CVE-2018-3155: Canonical Ubuntu Linux

High severity, CVSS 7.7. EPSS: 3.7% chance of exploitation in the next 30 days.

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Parser). Supported versions that are affected are 5.7.23 and prior and 8.0.12 and prior. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise MySQL Server. While the vulnerability is in MySQL Server, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.0 Base Score 7.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

Affected products

• Canonical Ubuntu Linux: version 14.04 only; version 16.04 only; version 18.04 only; version 18.10 only
• Netapp Oncommand Insight: affected versions not specified
• Netapp Oncommand Unified Manager: from 9.4; from 7.3
• Netapp Oncommand Workflow Automation: affected versions not specified
• Netapp Snapcenter: affected versions not specified
• Netapp Storage Automation Store: affected versions not specified
• Oracle MySQL: from 5.7.0, up to and including 5.7.23; from 8.0.0, up to and including 8.0.12

Published 2018-10-17. Last modified 2026-06-17.