CVE-2026-21936: Medium severity Oracle MySQL Server vulnerability
Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). 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-2026-21936?
CVE-2026-21936 is considered a high-severity vulnerability that can be easily exploited by high-privileged attackers.
How do I fix CVE-2026-21936?
To mitigate CVE-2026-21936, upgrade your MySQL Server to a version that is not affected, such as 8.0.45 or later.
Which versions of MySQL Server are affected by CVE-2026-21936?
CVE-2026-21936 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.
Can CVE-2026-21936 be exploited remotely?
Yes, CVE-2026-21936 can be exploited by attackers with network access via multiple protocols.
What component of MySQL Server does CVE-2026-21936 affect?
CVE-2026-21936 affects the InnoDB component of Oracle MySQL Server.