What’s Vulnerable › Vulnerabilities

CVE-2020-2921

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-04-15 · updated 2026-06-17

Description

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).

Affected products

• Fedoraproject Fedora: 30, 31, 32
• MySQL Server: from 8.0.0 before 8.0.19 — fixed in 8.0.19

How to fix

Upgrade to a fixed version: MySQL Server 8.0.19. Check the vendor advisory for mitigations.

References

• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/77REFDB7DE4WNKQIRGZTF53RFBQOXQLC/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SDGBQYS3A36S4CAZPV5YROHYXYZR6LAH/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TSVLI36TYRTPQGCS24VZQUXCUFOUW4VQ/
• https://security.gentoo.org/glsa/202105-27
• https://security.netapp.com/advisory/ntap-20200416-0003/
• https://usn.ubuntu.com/4350-1/
• https://www.oracle.com/security-alerts/cpuapr2020.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/77REFDB7DE4WNKQIRGZTF53RFBQOXQLC/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SDGBQYS3A36S4CAZPV5YROHYXYZR6LAH/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TSVLI36TYRTPQGCS24VZQUXCUFOUW4VQ/
• https://security.gentoo.org/glsa/202105-27
• https://security.netapp.com/advisory/ntap-20200416-0003/

Get alerted when CVE-2020-2921 or the next vulnerability affects your stack