CVE-2026-21937: Medium severity Oracle MySQL Server vulnerability
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: DDL). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. 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 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21937?
CVE-2026-21937 is considered a high severity vulnerability that can be easily exploited by a high privileged attacker.
How do I fix CVE-2026-21937?
To fix CVE-2026-21937, you should update MySQL Server to a version that is not affected, such as version 8.0.45 or later.
What versions of MySQL Server are affected by CVE-2026-21937?
CVE-2026-21937 affects MySQL Server versions 8.0.0 to 8.0.44, 8.4.0 to 8.4.7, and 9.0.0 to 9.5.0.
Who can exploit CVE-2026-21937?
CVE-2026-21937 can be exploited by a high privileged attacker with network access using multiple protocols.
What components of MySQL Server are impacted by CVE-2026-21937?
CVE-2026-21937 impacts the Server: DDL component of MySQL Server.