CVE-2014-0420: Unspecified vulnerability in the MySQL Server component in Oracle MySQL 5.5.34 and earlier, and 5.6.14 and...

Security readout for executives and security teams

CVE-2014-0420 is an Oracle MySQL Server flaw affecting old 5.5.34 and earlier and 5.6.14 and earlier releases. A logged-in remote user could disrupt database availability through the replication component. The public record does not describe the exact vector, so urgency depends on whether legacy MySQL with replication exposure still exists. Exposure is most likely in legacy Oracle MySQL 5.5 or 5.6 deployments, especially systems using replication or allowing authenticated remote database access. Modern supported MySQL versions are not identified as affected in the provided sources. Treat this as a legacy exposure cleanup item unless old MySQL remains in critical systems. Prioritize remediation where replication supports customer-facing services or where many users can authenticate remotely. Mitigation focus: Inventory MySQL 5.5 and 5.6 instances across production, staging, and backups.; Apply Oracle or Linux distribution security updates referenced for the January 2014 CPU.; Review vendor advisories before changing unsupported or forked MySQL deployments..

Prepared

Jun 14, 2026, 14:50 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.