CVE-2026-21968
MediumVulnerability Description
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.0.44, 8.4.0-8.4.7 and 9.0.0-9.5.0. 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 ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
CVSS Metrics
Common Vulnerability Scoring System
Vector String:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Known Affected Software
37 configuration(s) from 1 vendor(s)
cpe:2.3:a:oracle:mysql_server:8.0.30:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.4.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:9.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.42:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.34:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.31:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.23:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.35:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.4.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.17:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.29:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.36:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:9.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.22:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.4.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.33:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:9.0.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.4.6:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.37:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.40:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:9.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.43:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.4.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.28:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.4.5:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.27:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:9.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.32:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.38:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.41:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.15:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.26:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.25:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.39:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:8.0.24:*:*:*:*:*:*:*
CVE-2026-21968
CVE-2026-21968
USN-7994-1
USN-7994-1: MySQL vulnerabilities
CPUJAN2026
Oracle Critical Patch Update Advisory - January 2026
Severity Details
Key Information
- Published Date
- January 20, 2026
