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).
References
| Link | Resource |
|---|---|
| https://www.oracle.com/security-alerts/cpujan2026.html | Vendor Advisory |
Configurations
History
29 Jan 2026, 15:22
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://www.oracle.com/security-alerts/cpujan2026.html - Vendor Advisory | |
| First Time |
Oracle mysql Server
Oracle |
|
| CPE | cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* |
21 Jan 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-400 |
20 Jan 2026, 22:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-20 22:15
Updated : 2026-01-29 15:22
NVD link : CVE-2026-21949
Mitre link : CVE-2026-21949
CVE.ORG link : CVE-2026-21949
JSON object : View
Products Affected
oracle
- mysql_server
CWE
CWE-400
Uncontrolled Resource Consumption