3.7.21

Important

If you previously disabled Ingress Controller to mitigate vulnerabilities, Mirantis recommends that following upgrade to MKE 3.7.21 you re-enable the component. For detailed information on how to do this, refer to Configure NGINX Ingress Controller.

Release date	Name	Highlights
2025-APR-07	MKE 3.7.21	Patch release for MKE 3.7 that focuses on CVE mitigation. For detail on the specific CVEs addressed, refer to Security information.

• Enhancements
• Addressed issues
• Known issues
  • [MKE-10152] Upgrading large Windows clusters can initiate a rollback
  • [MKE-9699] Ingress Controller with external load balancer can enter crashloop
  • [MKE-8914] Windows Server Core with Containers images incompatible with GCP
  • [MKE-8814] Mismatched MTU values cause Swarm overlay network issues on GCP
  • [MKE-12030] MKE telemetry setting overrides key/value in daemon.json
• Major component versions
• Security information