CVE-2024-21159 is a vulnerability in the InnoDB component of Oracle MySQL Server affecting versions 8.0.36 and prior, and 8.3.0 and prior. It allows a high-privileged attacker with network access to cause a denial of service by hanging or crashing the MySQL Server. The vulnerability impacts availability but does not affect confidentiality or integrity. The CVSS 3.1 base score is 4.9, indicating a medium severity. Oracle has included this vulnerability in its July 2024 Critical Patch Update, which contains security patches for affected MySQL versions.