CVE-2023-21840

MediumCVSS 4.9/10Last modified Jun 17, 2026

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS). Supported versions that are affected are 5.7.40 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).

Metrics

CVSS 3.1 4.9/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Affected software

No affected versions have been published.

Timeline

Published
Jan 18, 2023
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2023-21840: Medium severity, CVSS 4.9 | Vulnix