CVE-2018-2780: Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: Optimizer).

Security readout for executives and security teams

This issue can let an authenticated low-privileged remote user crash or hang MySQL Server 5.7.21 or earlier. Business impact is service availability: applications depending on the database may fail until service recovers. Sources do not report data theft or tampering for this CVE. Exposure is likely where MySQL Server 5.7.21 or prior is reachable by users or services that can authenticate with low privileges. Public internet exposure increases business risk, but exploitation still requires valid low-privileged access per the source description. Treat as a moderate availability risk. It is not described as data compromise, but database downtime can disrupt customer-facing services. Patch during the next controlled maintenance window, sooner for internet-reachable or multi-tenant database environments. Mitigation focus: Apply Oracle MySQL or distribution vendor updates referenced by the advisories.; Prioritize systems running MySQL Server 5.7.21 or earlier.; Restrict MySQL network access to trusted application hosts and administration networks..

Prepared

Jun 7, 2026, 13:40 UTC (UTC+00:00)

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