CVE-2018-2667: Medium severity ORACLE MySQL vulnerability
Last updated 25 August 2025
Other sources
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer). Supported versions that are affected are 5.7.20 and prior. Easily exploitable vulnerability allows 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 (complete DOS) of MySQL Server.
External References:
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
— Red Hat
Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer). Supported versions that are affected are 5.7.20 and prior. Easily exploitable vulnerability allows 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 (complete DOS) of MySQL Server. CVSS 3.0 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
— Launchpad
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2018-2667?
CVE-2018-2667 is considered a high severity vulnerability due to its potential exploitation by high privileged attackers with network access.
How do I fix CVE-2018-2667?
To fix CVE-2018-2667, upgrade your MySQL Server version to 5.7.21 or later.
Which MySQL versions are affected by CVE-2018-2667?
CVE-2018-2667 affects MySQL Server versions 5.7.20 and earlier.
Can CVE-2018-2667 be exploited remotely?
Yes, CVE-2018-2667 can be exploited remotely by attackers with network access.
What components of MySQL are impacted by CVE-2018-2667?
CVE-2018-2667 impacts the MySQL Server component, specifically the Optimizer subcomponent.