vulnerability
Oracle MySQL Vulnerability: CVE-2026-21949
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:L/Au:S/C:N/I:N/A:C) | Jan 21, 2026 | Jan 21, 2026 | Jan 22, 2026 |
Severity
7
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:C)
Published
Jan 21, 2026
Added
Jan 21, 2026
Modified
Jan 22, 2026
Description
Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 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).
Solution
mysql-upgrade-9_6_0
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