What is the severity of CVE-2025-21493?

CVE-2025-21493 is considered a difficult to exploit vulnerability that affects high privileged attackers.

How do I fix CVE-2025-21493?

To fix CVE-2025-21493, upgrade your MySQL Server to versions 8.4.4 or 9.1.1 or later.

What versions are affected by CVE-2025-21493?

CVE-2025-21493 affects MySQL Server versions prior to 8.4.3 and 9.1.0.

Can CVE-2025-21493 be exploited remotely?

Yes, CVE-2025-21493 can be exploited remotely by high privileged attackers with network access.

What component is impacted by CVE-2025-21493?

CVE-2025-21493 impacts the Server: Security: Privileges component of Oracle MySQL.

Vulnerability/
CVE-2025-21493

medium

4.4

CWE

770

EPSS

0.043%

21/1/2025

23/1/2025

CVE-2025-21493

First published: Tue Jan 21 2025(Updated: )

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). Supported versions that are affected are 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/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	<8.4.3<9.1.0

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Reference Links

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

Frequently Asked Questions

What is the severity of CVE-2025-21493?
CVE-2025-21493 is considered a difficult to exploit vulnerability that affects high privileged attackers.
How do I fix CVE-2025-21493?
To fix CVE-2025-21493, upgrade your MySQL Server to versions 8.4.4 or 9.1.1 or later.
What versions are affected by CVE-2025-21493?
CVE-2025-21493 affects MySQL Server versions prior to 8.4.3 and 9.1.0.
Can CVE-2025-21493 be exploited remotely?
Yes, CVE-2025-21493 can be exploited remotely by high privileged attackers with network access.
What component is impacted by CVE-2025-21493?
CVE-2025-21493 impacts the Server: Security: Privileges component of Oracle MySQL.

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