diff --git a/x-pack/plugins/monitoring/common/types/es.ts b/x-pack/plugins/monitoring/common/types/es.ts
index 2802dcaea9a79..728cd3d73a34c 100644
--- a/x-pack/plugins/monitoring/common/types/es.ts
+++ b/x-pack/plugins/monitoring/common/types/es.ts
@@ -278,6 +278,14 @@ export interface ElasticsearchLegacySource {
   };
   ccr_stats?: {
     leader_index?: string;
+    follower_index?: string;
+    shard_id?: number;
+    read_exceptions?: Array<{
+      exception?: {
+        type?: string;
+      };
+    }>;
+    time_since_last_read_millis?: number;
   };
   index_recovery?: {
     shards?: ElasticsearchIndexRecoveryShard[];
diff --git a/x-pack/plugins/monitoring/server/lib/apm/_get_time_of_last_event.ts b/x-pack/plugins/monitoring/server/lib/apm/_get_time_of_last_event.ts
index dad34ec3861f9..68f16cf23b474 100644
--- a/x-pack/plugins/monitoring/server/lib/apm/_get_time_of_last_event.ts
+++ b/x-pack/plugins/monitoring/server/lib/apm/_get_time_of_last_event.ts
@@ -59,5 +59,5 @@ export async function getTimeOfLastEvent({
   };
 
   const response = await callWithRequest(req, 'search', params);
-  return response.hits?.hits.length ? response.hits?.hits[0]._source.timestamp : undefined;
+  return response.hits?.hits.length ? response.hits?.hits[0]?._source.timestamp : undefined;
 }
diff --git a/x-pack/plugins/monitoring/server/lib/cluster/flag_supported_clusters.ts b/x-pack/plugins/monitoring/server/lib/cluster/flag_supported_clusters.ts
index 6b2ebcf281a8f..248d1604ee20b 100644
--- a/x-pack/plugins/monitoring/server/lib/cluster/flag_supported_clusters.ts
+++ b/x-pack/plugins/monitoring/server/lib/cluster/flag_supported_clusters.ts
@@ -44,7 +44,7 @@ async function findSupportedBasicLicenseCluster(
       },
     },
   })) as ElasticsearchResponse;
-  const supportedClusterUuid = kibanaDataResult.hits?.hits[0]._source.cluster_uuid ?? undefined;
+  const supportedClusterUuid = kibanaDataResult.hits?.hits[0]?._source.cluster_uuid ?? undefined;
   for (const cluster of clusters) {
     if (cluster.cluster_uuid === supportedClusterUuid) {
       cluster.isSupported = true;
diff --git a/x-pack/plugins/monitoring/server/lib/cluster/get_cluster_license.ts b/x-pack/plugins/monitoring/server/lib/cluster/get_cluster_license.ts
index 2b55b2747ee46..9f3106f7c04a3 100644
--- a/x-pack/plugins/monitoring/server/lib/cluster/get_cluster_license.ts
+++ b/x-pack/plugins/monitoring/server/lib/cluster/get_cluster_license.ts
@@ -33,6 +33,6 @@ export function getClusterLicense(req: LegacyRequest, esIndexPattern: string, cl
 
   const { callWithRequest } = req.server.plugins.elasticsearch.getCluster('monitoring');
   return callWithRequest(req, 'search', params).then((response: ElasticsearchResponse) => {
-    return response.hits?.hits[0]._source.license;
+    return response.hits?.hits[0]?._source.license;
   });
 }
diff --git a/x-pack/plugins/monitoring/server/lib/elasticsearch/ccr.ts b/x-pack/plugins/monitoring/server/lib/elasticsearch/ccr.ts
index 0f8099d13d44c..ec7ccd5ddb9af 100644
--- a/x-pack/plugins/monitoring/server/lib/elasticsearch/ccr.ts
+++ b/x-pack/plugins/monitoring/server/lib/elasticsearch/ccr.ts
@@ -15,8 +15,9 @@ import { ElasticsearchResponse } from '../../../common/types/es';
 import { LegacyRequest } from '../../types';
 
 export function handleResponse(response: ElasticsearchResponse) {
-  const isEnabled = response.hits?.hits[0]._source.stack_stats?.xpack?.ccr?.enabled ?? false;
-  const isAvailable = response.hits?.hits[0]._source.stack_stats?.xpack?.ccr?.available ?? false;
+  const isEnabled = response.hits?.hits[0]?._source.stack_stats?.xpack?.ccr?.enabled ?? undefined;
+  const isAvailable =
+    response.hits?.hits[0]?._source.stack_stats?.xpack?.ccr?.available ?? undefined;
   return isEnabled && isAvailable;
 }
 
diff --git a/x-pack/plugins/monitoring/server/lib/elasticsearch/get_last_recovery.ts b/x-pack/plugins/monitoring/server/lib/elasticsearch/get_last_recovery.ts
index 34ae28cb1ae3c..31a58651ecd3b 100644
--- a/x-pack/plugins/monitoring/server/lib/elasticsearch/get_last_recovery.ts
+++ b/x-pack/plugins/monitoring/server/lib/elasticsearch/get_last_recovery.ts
@@ -42,7 +42,7 @@ export function filterOldShardActivity(startMs: number) {
  */
 export function handleLastRecoveries(resp: ElasticsearchResponse, start: number) {
   if (resp.hits?.hits.length === 1) {
-    const data = (resp.hits?.hits[0]._source.index_recovery?.shards ?? []).filter(
+    const data = (resp.hits?.hits[0]?._source.index_recovery?.shards ?? []).filter(
       filterOldShardActivity(moment.utc(start).valueOf())
     );
     data.sort((a, b) => b.start_time_in_millis - a.start_time_in_millis);
diff --git a/x-pack/plugins/monitoring/server/lib/elasticsearch/indices/get_index_summary.ts b/x-pack/plugins/monitoring/server/lib/elasticsearch/indices/get_index_summary.ts
index 3d6d1a792e2d6..3257c5ac36084 100644
--- a/x-pack/plugins/monitoring/server/lib/elasticsearch/indices/get_index_summary.ts
+++ b/x-pack/plugins/monitoring/server/lib/elasticsearch/indices/get_index_summary.ts
@@ -17,7 +17,7 @@ import { LegacyRequest } from '../../../types';
 
 export function handleResponse(shardStats: any, indexUuid: string) {
   return (response: ElasticsearchResponse) => {
-    const indexStats = response.hits?.hits[0]._source.index_stats;
+    const indexStats = response.hits?.hits[0]?._source.index_stats;
     const primaries = indexStats?.primaries;
     const total = indexStats?.total;
 
diff --git a/x-pack/plugins/monitoring/server/lib/elasticsearch/indices/get_indices.ts b/x-pack/plugins/monitoring/server/lib/elasticsearch/indices/get_indices.ts
index 56b99d9fbde92..6d38cc7824ae4 100644
--- a/x-pack/plugins/monitoring/server/lib/elasticsearch/indices/get_indices.ts
+++ b/x-pack/plugins/monitoring/server/lib/elasticsearch/indices/get_indices.ts
@@ -29,11 +29,11 @@ export function handleResponse(
   const hits = resp.hits?.hits ?? [];
   return hits.map((hit) => {
     const stats = hit._source.index_stats;
-    const earliestStats = hit.inner_hits?.earliest?.hits?.hits[0]._source.index_stats;
+    const earliestStats = hit.inner_hits?.earliest?.hits?.hits[0]?._source.index_stats;
 
     const rateOptions = {
       hitTimestamp: hit._source.timestamp,
-      earliestHitTimestamp: hit.inner_hits?.earliest?.hits?.hits[0]._source.timestamp,
+      earliestHitTimestamp: hit.inner_hits?.earliest?.hits?.hits[0]?._source.timestamp,
       timeWindowMin: min,
       timeWindowMax: max,
     };
diff --git a/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_node_summary.ts b/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_node_summary.ts
index 6c98fa1f51301..bf7471d77b616 100644
--- a/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_node_summary.ts
+++ b/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_node_summary.ts
@@ -39,15 +39,15 @@ export function handleResponse(
     > = nodeStatsHits.map((hit) => hit._source.elasticsearch?.node || hit._source.source_node); // using [0] value because query results are sorted desc per timestamp
     const node = nodes[0] || getDefaultNodeFromId(nodeUuid);
     const sourceStats =
-      response.hits?.hits[0]._source.elasticsearch?.node?.stats ||
-      response.hits?.hits[0]._source.node_stats;
+      response.hits?.hits[0]?._source.elasticsearch?.node?.stats ||
+      response.hits?.hits[0]?._source.node_stats;
     const clusterNode =
       clusterState && clusterState.nodes ? clusterState.nodes[nodeUuid] : undefined;
     const stats = {
       resolver: nodeUuid,
       node_ids: nodes.map((_node) => node.id || node.uuid),
       attributes: node.attributes,
-      transport_address: response.hits?.hits[0]._source.service?.address || node.transport_address,
+      transport_address: response.hits?.hits[0]?._source.service?.address || node.transport_address,
       name: node.name,
       type: node.type,
     };
diff --git a/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/map_nodes_info.ts b/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/map_nodes_info.ts
index 8ccf04a15ed39..0f166c873dac1 100644
--- a/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/map_nodes_info.ts
+++ b/x-pack/plugins/monitoring/server/lib/elasticsearch/nodes/get_nodes/map_nodes_info.ts
@@ -50,7 +50,7 @@ export function mapNodesInfo(
         isOnline,
         nodeTypeLabel,
         nodeTypeClass,
-        shardCount: nodesShardCount.nodes[uuid].shardCount ?? 0,
+        shardCount: nodesShardCount.nodes[uuid]?.shardCount ?? 0,
       },
     };
   }, {});
diff --git a/x-pack/plugins/monitoring/server/lib/kibana/get_kibana_info.ts b/x-pack/plugins/monitoring/server/lib/kibana/get_kibana_info.ts
index 28f1ffaf03597..4a0c598eec307 100644
--- a/x-pack/plugins/monitoring/server/lib/kibana/get_kibana_info.ts
+++ b/x-pack/plugins/monitoring/server/lib/kibana/get_kibana_info.ts
@@ -13,7 +13,7 @@ import { LegacyRequest } from '../../types';
 import { ElasticsearchResponse } from '../../../common/types/es';
 
 export function handleResponse(resp: ElasticsearchResponse) {
-  const source = resp.hits?.hits[0]._source.kibana_stats;
+  const source = resp.hits?.hits[0]?._source.kibana_stats;
   const kibana = source?.kibana;
   return merge(kibana, {
     availability: calculateAvailability(source?.timestamp),
diff --git a/x-pack/plugins/monitoring/server/routes/api/v1/elasticsearch/ccr.ts b/x-pack/plugins/monitoring/server/routes/api/v1/elasticsearch/ccr.ts
index 0dc9c251422c0..6f41455ebca6a 100644
--- a/x-pack/plugins/monitoring/server/routes/api/v1/elasticsearch/ccr.ts
+++ b/x-pack/plugins/monitoring/server/routes/api/v1/elasticsearch/ccr.ts
@@ -12,7 +12,7 @@ import { handleError } from '../../../../lib/errors/handle_error';
 // @ts-ignore
 import { prefixIndexPattern } from '../../../../lib/ccs_utils';
 import { INDEX_PATTERN_ELASTICSEARCH } from '../../../../../common/constants';
-import { ElasticsearchResponse } from '../../../../../common/types/es';
+import { ElasticsearchResponse, ElasticsearchSource } from '../../../../../common/types/es';
 import { LegacyRequest } from '../../../../types';
 
 function getBucketScript(max: string, min: string) {
@@ -218,19 +218,25 @@ export function ccrRoute(server: {
           return { data: [] };
         }
 
-        const fullStats = response.hits?.hits.reduce((accum, hit) => {
-          const innerHits = hit.inner_hits?.by_shard.hits?.hits ?? [];
-          const innerHitsSource = innerHits.map((innerHit) => get(innerHit, '_source.ccr_stats'));
-          const grouped = groupBy(
-            innerHitsSource,
-            (stat) => `${stat.follower_index}:${stat.shard_id}`
-          );
+        const fullStats: {
+          [key: string]: Array<NonNullable<ElasticsearchSource['ccr_stats']>>;
+        } =
+          response.hits?.hits.reduce((accum, hit) => {
+            const innerHits = hit.inner_hits?.by_shard.hits?.hits ?? [];
+            const innerHitsSource = innerHits.map(
+              (innerHit) =>
+                innerHit._source.ccr_stats as NonNullable<ElasticsearchSource['ccr_stats']>
+            );
+            const grouped = groupBy(
+              innerHitsSource,
+              (stat) => `${stat.follower_index}:${stat.shard_id}`
+            );
 
-          return {
-            ...accum,
-            ...grouped,
-          };
-        }, {});
+            return {
+              ...accum,
+              ...grouped,
+            };
+          }, {}) ?? {};
 
         const buckets = response.aggregations.by_follower_index.buckets;
         const data = buckets.reduce((accum: any, bucket: any) => {
@@ -261,11 +267,11 @@ export function ccrRoute(server: {
 
           stat.shards = get(bucket, 'by_shard_id.buckets').reduce(
             (accum2: any, shardBucket: any) => {
-              const fullStat = get(fullStats, [`${bucket.key}:${shardBucket.key}`, '[0]'], {});
+              const fullStat = fullStats[`${bucket.key}:${shardBucket.key}`][0] ?? {};
               const shardStat = {
                 shardId: shardBucket.key,
-                error: fullStat.read_exceptions.length
-                  ? fullStat.read_exceptions[0].exception.type
+                error: fullStat.read_exceptions?.length
+                  ? fullStat.read_exceptions[0].exception?.type
                   : null,
                 opsSynced: get(shardBucket, 'ops_synced.value'),
                 syncLagTime: fullStat.time_since_last_read_millis,
diff --git a/x-pack/plugins/monitoring/server/routes/api/v1/elasticsearch/ccr_shard.ts b/x-pack/plugins/monitoring/server/routes/api/v1/elasticsearch/ccr_shard.ts
index 78e98fb51b5e8..fd834cff29aa3 100644
--- a/x-pack/plugins/monitoring/server/routes/api/v1/elasticsearch/ccr_shard.ts
+++ b/x-pack/plugins/monitoring/server/routes/api/v1/elasticsearch/ccr_shard.ts
@@ -137,15 +137,15 @@ export function ccrShardRoute(server: { route: (p: any) => void; config: () => {
           getCcrStat(req, esIndexPattern, filters),
         ]);
 
-        const stat = ccrResponse.hits?.hits[0]._source.ccr_stats ?? {};
+        const stat = ccrResponse.hits?.hits[0]?._source.ccr_stats ?? {};
         const oldestStat =
-          ccrResponse.hits?.hits[0].inner_hits?.oldest.hits?.hits[0]._source.ccr_stats ?? {};
+          ccrResponse.hits?.hits[0].inner_hits?.oldest.hits?.hits[0]?._source.ccr_stats ?? {};
 
         return {
           metrics,
           stat,
           formattedLeader: getFormattedLeaderIndex(stat.leader_index ?? ''),
-          timestamp: ccrResponse.hits?.hits[0]._source.timestamp,
+          timestamp: ccrResponse.hits?.hits[0]?._source.timestamp,
           oldestStat,
         };
       } catch (err) {