CVE-2020-2921: Medium severity Oracle MySQL vulnerability
Last updated 18 August 2025
Other sources
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Group Replication Plugin). Supported versions that are affected are 8.0.19 and prior. Difficult to exploit 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: Group Replication Plugin). Supported versions that are affected are 8.0.19 and prior. Difficult to exploit 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).
— Launchpad
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2020-2921?
The severity of CVE-2020-2921 is medium (4.4).
What is the affected software of CVE-2020-2921?
The affected software of CVE-2020-2921 is Oracle MySQL Server versions 8.0.19 and prior.
How can an attacker exploit CVE-2020-2921?
Exploiting CVE-2020-2921 requires a high privileged attacker with network access via multiple protocols to compromise MySQL Server.
Where can I find more information about CVE-2020-2921?
You can find more information about CVE-2020-2921 [here](https://security.netapp.com/advisory/ntap-20200416-0003/), [here](https://www.oracle.com/security-alerts/cpuapr2020.html), and [here](https://usn.ubuntu.com/4350-1/).