Bug 2431409 (CVE-2026-21968) - CVE-2026-21968 mysql: Optimizer unspecified vulnerability (CPU Jan 2026)
Summary: CVE-2026-21968 mysql: Optimizer unspecified vulnerability (CPU Jan 2026)
Keywords:
Status: NEW
Alias: CVE-2026-21968
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2438822 2438823
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-20 23:03 UTC by OSIDB Bzimport
Modified: 2026-03-10 08:27 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:4162 0 None None None 2026-03-10 08:27:26 UTC

Description OSIDB Bzimport 2026-01-20 23:03:51 UTC 
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).
Comment 2 errata-xmlrpc 2026-03-10 08:27:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:4162 https://access.redhat.com/errata/RHSA-2026:4162
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