A security issue was discovered in Kubernetes that could allow  Windows workloads to run as `ContainerAdministrator` even when those workloads set the `runAsNonRoot` option to `true `.

This issue has been rated low and assigned CVE-2021-25749

**Am I vulnerable?**

All Kubernetes clusters with following versions, running Windows workloads with `runAsNonRoot` are impacted

**Affected Versions**:

    - [Deprecation warnings](#deprecation-warnings)
    - [Avoiding permanent beta](#avoiding-permanent-beta)
    - [Expanded CLI support for debugging workloads and nodes](#expanded-cli-support-for-debugging-workloads-and-nodes)
    - [Structured logging](#structured-logging)
    - [EndpointSlices are now enabled by default](#endpointslices-are-now-enabled-by-default)

alpha feature enables a node to surface multiple runtime options to support a variety of workload types.  Examples include native linux containers, and “sandboxed” containers that isolate the container from the host kernel.

The CustomCFSQuotaPeriod alpha feature enables node administrators to change the default period used to enforce CFS quota on a node.  This can improve performance for some workloads that experience latency while using CFS quota with the default measurement period.  Finally,...

- Added a new alpha API: ClusterTrustBundle (`certificates.k8s.io/v1alpha1`).
  A ClusterTrustBundle may be used to distribute [X.509](https://www.itu.int/rec/T-REC-X.509) trust anchors to workloads within the cluster. ([#113218](https://github.com/kubernetes/kubernetes/pull/113218), [@ahmedtd](https://github.com/ahmedtd)) [SIG API Machinery, Auth and Testing]

 - [Action Required] CSI drivers that call IsLikelyNotMountPoint...

## Known Issues

There are a number of known issues that have been found and are being worked on.
Please be aware of them as you test your workloads.

* PVC Volume not detached if pod deleted via namespace deletion ([29051](https://github.com/kubernetes/kubernetes/issues/29051))

### SIG Autoscaling

### Ephemeral Containers Graduate to Stable

  - [beta] StatefulSets allow workloads that require persistent identity or per-instance storage to be created and managed on Kubernetes. ([docs](http://kubernetes.io/docs/concepts/abstractions/controllers/statefulsets/)) ([kubernetes/features#137](https://github.com/kubernetes/enhancements/issues/137))...

- Removed "endpoint-controller" and "workload-leader-election" FlowSchemas from the default APF configuration.