Medium severity4.9NVD Advisory· Published Jan 18, 2023· Updated Jun 17, 2026
CVE-2023-21840
CVE-2023-21840
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).
Affected products
2<=5.7.40+ 1 more
- (no CPE)range: <=5.7.40
- (no CPE)range: 5.7.40 and prior
Patches
Vulnerability mechanics
References
1- www.oracle.com/security-alerts/cpujan2023.htmlnvdPatchVendor Advisory
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