CVE-2025-21575 Denial of service in MySQL Cluster

Medium 6.5 Published 15 Apr 2025 Updated 3 Nov 2025

A low-privileged attacker can cause a complete denial of service in MySQL Server via network access.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2025-21575?

CVE-2025-21575 is a medium-severity denial of service vulnerability in Oracle Mysql Cluster, published on 15 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Parser). Supported versions that are affected are 8.0.0-8.0.41, 8.4.0-8.4.4 and 9.0.0-9.2.0. Easily exploitable vulnerability allows low 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 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Weakness: CWE-400

Which versions are affected by CVE-2025-21575?

It affects 2 products.

Products include Oracle Mysql Cluster, Oracle Mysql Server.

How do I fix CVE-2025-21575?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-21575 being exploited?

There is no known exploitation of CVE-2025-21575 in the wild and no public exploit code.

All Oracle Mysql Cluster vulnerabilities

Sources

Also known as AZL-62110, AZL-62133, GHSA-p48m-987f-62rc, MINI-6rmh-jvcv-g3jh, MINI-7p5f-rf9h-68c3, MINI-q7cg-qpgx-qv7q and 1 more.