CVE-2026-34272

Medium

Low Medium High Critical

6.5

CVSS Score

Published: Apr 21, 2026

Last Modified: Apr 21, 2026

Vulnerability Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 9.0.0-9.6.0. 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

Attack Vector

N

Attack Complexity

L

Privileges Required

L

User Interaction

N

Scope

U

Confidentiality

N

Integrity

N

Availability

H

Available Security Patches

1 patch available from vendors

View All Patches

Oracle

CPUAPR2026

Oracle Critical Patch Update Advisory - April 2026

Severity

Critical

Released

Apr 21, 2026

Restart Required

Security Update

View Details Vendor Page

Browse All Security Patches

References & Resources

https://www.oracle.com/security-alerts/cpuapr2026.html
secalert_us@oracle.com

Severity Details

6.5

out of 10.0

Medium

Key Information

Published Date: April 21, 2026

External Resources

NIST

National Vulnerability Database

Official CVE record