CVE-2025-21567 Missing authorization in MySQL Server

Medium 4.3 Published 21 Jan 2025 Updated 3 Nov 2025

A low-privileged attacker can gain unauthorized read access to a subset of MySQL Server data via network protocols.

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-2025-21567?

CVE-2025-21567 is a medium-severity missing authorization vulnerability in Oracle Mysql Server, published on 21 Jan 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: Security: Privileges). Supported versions that are affected are 9.1.0 and prior. 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 read access to a subset of MySQL Server accessible data. CVSS 3.1 Base Score 4.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

Weakness: CWE-863

Which versions are affected by CVE-2025-21567?

It affects 1 product.

Products include Oracle Mysql Server.

How do I fix CVE-2025-21567?

Apply the vendor's patch.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2025-21567 being exploited?

There is no known exploitation of CVE-2025-21567 in the wild and no public exploit code.

All Oracle Mysql Server vulnerabilities

Sources

Also known as CLEANSTART-2026-AJ94153, GHSA-w8gv-53r7-fph6, MINI-5829-7jx8-j3w3, UBUNTU-CVE-2025-21567.