CVE-2020-2923: 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 8.0.19 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/cpuapr2020.html
— Red Hat
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.19 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
Event History
Frequently Asked Questions
What is the vulnerability ID for this MySQL Server vulnerability?
The vulnerability ID for this MySQL Server vulnerability is CVE-2020-2923.
What is the severity level of CVE-2020-2923?
The severity level of CVE-2020-2923 is medium, with a score of 4.9.
Which versions of MySQL Server are affected by CVE-2020-2923?
MySQL Server versions 8.0.19 and prior are affected by CVE-2020-2923.
How can an attacker exploit CVE-2020-2923?
An attacker with network access via multiple protocols can exploit CVE-2020-2923 to compromise MySQL Server.
Where can I find more information about CVE-2020-2923?
You can find more information about CVE-2020-2923 at the following references: [Reference 1](https://security.netapp.com/advisory/ntap-20200416-0003/), [Reference 2](https://www.oracle.com/security-alerts/cpuapr2020.html), [Reference 3](https://usn.ubuntu.com/4350-1/).