diff --git a/internal/webhooks/cluster_test.go b/internal/webhooks/cluster_test.go
index ec114b445d01..3f81f5cb994e 100644
--- a/internal/webhooks/cluster_test.go
+++ b/internal/webhooks/cluster_test.go
@@ -2703,7 +2703,6 @@ func TestClusterTopologyValidationForTopologyClassChange(t *testing.T) {
 				Build(),
 			wantErr: false,
 		},
-
 		{
 			name: "Reject cluster.topology.class change with an incompatible infrastructureCluster Kind ref change",
 			firstClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
@@ -2762,7 +2761,6 @@ func TestClusterTopologyValidationForTopologyClassChange(t *testing.T) {
 				Build(),
 			wantErr: false,
 		},
-
 		{
 			name: "Reject cluster.topology.class change with an incompatible controlPlane Kind ref change",
 			firstClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
@@ -3123,6 +3121,38 @@ func TestClusterTopologyValidationForTopologyClassChange(t *testing.T) {
 				Build(),
 			wantErr: true,
 		},
+
+		// Kubernetes Version changes.
+		{
+			name: "Accept cluster.topology.class change with a compatible Kubernetes Version",
+			firstClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
+				WithInfrastructureClusterTemplate(refToUnstructured(ref)).
+				WithControlPlaneTemplate(refToUnstructured(ref)).
+				WithControlPlaneInfrastructureMachineTemplate(refToUnstructured(ref)).
+				Build(),
+			secondClass: builder.ClusterClass(metav1.NamespaceDefault, "class2").
+				WithInfrastructureClusterTemplate(refToUnstructured(compatibleNameChangeRef)).
+				WithControlPlaneTemplate(refToUnstructured(ref)).
+				WithControlPlaneInfrastructureMachineTemplate(refToUnstructured(ref)).
+				WithVersions("v1.22.2", "v1.23.2").
+				Build(),
+			wantErr: false,
+		},
+		{
+			name: "Reject cluster.topology.class change with an incompatible Kubernetes Version",
+			firstClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
+				WithInfrastructureClusterTemplate(refToUnstructured(ref)).
+				WithControlPlaneTemplate(refToUnstructured(ref)).
+				WithControlPlaneInfrastructureMachineTemplate(refToUnstructured(ref)).
+				Build(),
+			secondClass: builder.ClusterClass(metav1.NamespaceDefault, "class2").
+				WithInfrastructureClusterTemplate(refToUnstructured(compatibleNameChangeRef)).
+				WithControlPlaneTemplate(refToUnstructured(ref)).
+				WithControlPlaneInfrastructureMachineTemplate(refToUnstructured(ref)).
+				WithVersions("v1.33.0", "v1.34.0").
+				Build(),
+			wantErr: true,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(*testing.T) {
diff --git a/internal/webhooks/clusterclass.go b/internal/webhooks/clusterclass.go
index f984f369b5a2..8bba1ae80188 100644
--- a/internal/webhooks/clusterclass.go
+++ b/internal/webhooks/clusterclass.go
@@ -163,6 +163,10 @@ func (webhook *ClusterClass) validate(ctx context.Context, oldClusterClass, newC
 			return apierrors.NewInvalid(clusterv1.GroupVersion.WithKind("ClusterClass").GroupKind(), newClusterClass.Name, allErrs)
 		}
 
+		// Ensure New ClusterClass contains Kubernetes versions of all the Clusters of ClusterClass.
+		allErrs = append(allErrs,
+			webhook.validateKubernetesVersionsOfClusters(clusters, oldClusterClass, newClusterClass)...)
+
 		// Ensure no MachineDeploymentClass currently in use has been removed from the ClusterClass.
 		allErrs = append(allErrs,
 			webhook.validateRemovedMachineDeploymentClassesAreNotUsed(clusters, oldClusterClass, newClusterClass)...)
@@ -246,6 +250,32 @@ func validateUpdatesToMachineHealthCheckClasses(clusters []clusterv1.Cluster, ol
 	return allErrs
 }
 
+func (webhook *ClusterClass) validateKubernetesVersionsOfClusters(clusters []clusterv1.Cluster, _, newClusterClass *clusterv1.ClusterClass) field.ErrorList {
+	var allErrs field.ErrorList
+
+	// If there is no KubernetesVersions is set in the ClusterClass return early.
+	if len(newClusterClass.Spec.KubernetesVersions) == 0 {
+		return allErrs
+	}
+
+	kubernetesVersions := sets.Set[string]{}
+	for _, v := range newClusterClass.Spec.KubernetesVersions {
+		kubernetesVersions.Insert(v)
+	}
+
+	// Error if any Cluster's Kubernetes version is not set in the ClusterClass.
+	for _, c := range clusters {
+		if !kubernetesVersions.Has(c.Spec.Topology.Version) {
+			allErrs = append(allErrs, field.Forbidden(field.NewPath("spec", "kubernetesVersions"),
+				fmt.Sprintf("Kubernetes Version %s is used by Cluster %q but not set in ClusterClass",
+					c.Spec.Topology.Version, c.Name),
+			))
+		}
+	}
+
+	return allErrs
+}
+
 func (webhook *ClusterClass) validateRemovedMachineDeploymentClassesAreNotUsed(clusters []clusterv1.Cluster, oldClusterClass, newClusterClass *clusterv1.ClusterClass) field.ErrorList {
 	var allErrs field.ErrorList
 
diff --git a/internal/webhooks/clusterclass_test.go b/internal/webhooks/clusterclass_test.go
index 600fa24c304a..71009d1d8509 100644
--- a/internal/webhooks/clusterclass_test.go
+++ b/internal/webhooks/clusterclass_test.go
@@ -2489,6 +2489,102 @@ func TestClusterClassValidationWithClusterAwareChecks(t *testing.T) {
 				Build(),
 			expectErr: false,
 		},
+		{
+			name: "pass if ClusterClass does not contain any kubernetes version",
+			clusters: []client.Object{
+				builder.Cluster(metav1.NamespaceDefault, "cluster1").
+					WithLabels(map[string]string{clusterv1.ClusterTopologyOwnedLabel: ""}).
+					WithTopology(
+						builder.ClusterTopology().
+							WithClass("class1").
+							WithVersion("v1.33.0").
+							Build()).
+					Build(),
+			},
+			oldClusterClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
+				WithInfrastructureClusterTemplate(
+					builder.InfrastructureClusterTemplate(metav1.NamespaceDefault, "inf").Build()).
+				WithControlPlaneTemplate(
+					builder.ControlPlaneTemplate(metav1.NamespaceDefault, "cp1").Build()).
+				Build(),
+			newClusterClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
+				WithInfrastructureClusterTemplate(
+					builder.InfrastructureClusterTemplate(metav1.NamespaceDefault, "inf").Build()).
+				WithControlPlaneTemplate(
+					builder.ControlPlaneTemplate(metav1.NamespaceDefault, "cp1").Build()).
+				Build(),
+			expectErr: false,
+		},
+		{
+			name: "pass if ClusterClass contains cluster's kubernetes version",
+			clusters: []client.Object{
+				builder.Cluster(metav1.NamespaceDefault, "cluster1").
+					WithLabels(map[string]string{clusterv1.ClusterTopologyOwnedLabel: ""}).
+					WithTopology(
+						builder.ClusterTopology().
+							WithClass("class1").
+							WithVersion("v1.33.0").
+							Build()).
+					Build(),
+				builder.Cluster(metav1.NamespaceDefault, "cluster2").
+					WithLabels(map[string]string{clusterv1.ClusterTopologyOwnedLabel: ""}).
+					WithTopology(
+						builder.ClusterTopology().
+							WithClass("class1").
+							WithVersion("v1.34.0").
+							Build()).
+					Build(),
+			},
+			oldClusterClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
+				WithInfrastructureClusterTemplate(
+					builder.InfrastructureClusterTemplate(metav1.NamespaceDefault, "inf").Build()).
+				WithControlPlaneTemplate(
+					builder.ControlPlaneTemplate(metav1.NamespaceDefault, "cp1").Build()).
+				Build(),
+			newClusterClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
+				WithInfrastructureClusterTemplate(
+					builder.InfrastructureClusterTemplate(metav1.NamespaceDefault, "inf").Build()).
+				WithControlPlaneTemplate(
+					builder.ControlPlaneTemplate(metav1.NamespaceDefault, "cp1").Build()).
+				WithVersions("v1.32.0", "v1.33.0", "v1.34.0").
+				Build(),
+			expectErr: false,
+		},
+		{
+			name: "fail if ClusterClass does not contains all of cluster's kubernetes version",
+			clusters: []client.Object{
+				builder.Cluster(metav1.NamespaceDefault, "cluster1").
+					WithLabels(map[string]string{clusterv1.ClusterTopologyOwnedLabel: ""}).
+					WithTopology(
+						builder.ClusterTopology().
+							WithClass("class1").
+							WithVersion("v1.33.0").
+							Build()).
+					Build(),
+				builder.Cluster(metav1.NamespaceDefault, "cluster2").
+					WithLabels(map[string]string{clusterv1.ClusterTopologyOwnedLabel: ""}).
+					WithTopology(
+						builder.ClusterTopology().
+							WithClass("class1").
+							WithVersion("v1.34.0").
+							Build()).
+					Build(),
+			},
+			oldClusterClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
+				WithInfrastructureClusterTemplate(
+					builder.InfrastructureClusterTemplate(metav1.NamespaceDefault, "inf").Build()).
+				WithControlPlaneTemplate(
+					builder.ControlPlaneTemplate(metav1.NamespaceDefault, "cp1").Build()).
+				Build(),
+			newClusterClass: builder.ClusterClass(metav1.NamespaceDefault, "class1").
+				WithInfrastructureClusterTemplate(
+					builder.InfrastructureClusterTemplate(metav1.NamespaceDefault, "inf").Build()).
+				WithControlPlaneTemplate(
+					builder.ControlPlaneTemplate(metav1.NamespaceDefault, "cp1").Build()).
+				WithVersions("v1.32.0", "v1.33.0").
+				Build(),
+			expectErr: true,
+		},
 	}
 
 	for _, tt := range tests {