CVE-2025-21559

Summary

CVE-2025-21559 is a vulnerability affecting the InnoDB component of Oracle MySQL Server, with versions 8.0.40 and prior, 8.4.3 and prior, and 9.1.0 and prior being vulnerable. This issue permits a high privileged attacker, who has network access, to exploit the vulnerability through multiple protocols. Successful attacks can lead to a denial-of-service (DoS) by causing a hang or frequent crashes of the MySQL Server. Moreover, an unauthorized update, insert, or delete access to some of the MySQL Server's accessible data is possible. The CVSS Base Score of this vulnerability is 5.5, with impacts on both Integrity and Availability.

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