What is the severity of CVE-2025-21534?

CVE-2025-21534 is classified as a high severity vulnerability due to its ease of exploitation by high-privileged attackers.

How do I fix CVE-2025-21534?

To fix CVE-2025-21534, upgrade Oracle MySQL Server to version 8.0.40 or later, 8.4.3 or later, or 9.0.2 or later.

What versions of MySQL are affected by CVE-2025-21534?

CVE-2025-21534 affects Oracle MySQL Server versions up to 8.0.39, 8.4.2, and 9.0.1.

Who is at risk from CVE-2025-21534?

Organizations using vulnerable versions of Oracle MySQL Server are at risk if they have high-privileged attackers with network access.

What component is primarily affected in CVE-2025-21534?

The primary component affected by CVE-2025-21534 is the Performance Schema of the MySQL Server.

Vulnerability/
CVE-2025-21534

medium

4.9

CWE

770

EPSS

0.043%

21/1/2025

22/1/2025

CVE-2025-21534

First published: Tue Jan 21 2025(Updated: )

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Performance Schema). Supported versions that are affected are 8.0.39 and prior, 8.4.2 and prior and 9.0.1 and prior. Easily exploitable vulnerability allows high 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

Credit: secalert_us@oracle.com

Affected Software	Affected Version	How to fix
MySQL Server	<8.0.39<8.4.2<9.0.1

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Reference Links

https://www.oracle.com/security-alerts/cpujan2025.html

Frequently Asked Questions

What is the severity of CVE-2025-21534?
CVE-2025-21534 is classified as a high severity vulnerability due to its ease of exploitation by high-privileged attackers.
How do I fix CVE-2025-21534?
To fix CVE-2025-21534, upgrade Oracle MySQL Server to version 8.0.40 or later, 8.4.3 or later, or 9.0.2 or later.
What versions of MySQL are affected by CVE-2025-21534?
CVE-2025-21534 affects Oracle MySQL Server versions up to 8.0.39, 8.4.2, and 9.0.1.
Who is at risk from CVE-2025-21534?
Organizations using vulnerable versions of Oracle MySQL Server are at risk if they have high-privileged attackers with network access.
What component is primarily affected in CVE-2025-21534?
The primary component affected by CVE-2025-21534 is the Performance Schema of the MySQL Server.

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