CVE-2024-21173 is a vulnerability in the InnoDB component of Oracle MySQL Server affecting versions 8.0.37 and prior, and 8.4.0 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 (medium severity). Oracle has addressed this vulnerability in its July 2024 Critical Patch Update.