CVE-2020-2679: Medium severity Oracle MySQL vulnerability
Last updated 18 August 2025
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.18 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:
https://www.oracle.com/security-alerts/cpujan2020.html
— Red Hat
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.18 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
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/mysqlto a version that resolves this vulnerability.Fixed in 8.0.19 - Upgrade
Upgrade
oracle-mysql/server-optimizerto a version that resolves this vulnerability.Fixed in 8.0.19
Event History
Frequently Asked Questions
What is the severity of CVE-2020-2679?
CVE-2020-2679 is considered an easily exploitable vulnerability affecting MySQL Server versions 8.0.18 and prior.
How do I fix CVE-2020-2679?
To fix CVE-2020-2679, upgrade the MySQL Server to version 8.0.19 or later.
Which MySQL Server versions are affected by CVE-2020-2679?
MySQL Server versions 8.0.18 and earlier are affected by CVE-2020-2679.
Can CVE-2020-2679 be exploited remotely?
Yes, CVE-2020-2679 can be exploited remotely by a high privileged attacker with network access.
What component of MySQL is affected by CVE-2020-2679?
CVE-2020-2679 affects the Server: Optimizer component of MySQL Server.