diff --git a/CHANGELOG.unreleased.md b/CHANGELOG.unreleased.md
index 0619d9ea0..ebdad5d6c 100644
--- a/CHANGELOG.unreleased.md
+++ b/CHANGELOG.unreleased.md
@@ -9,6 +9,7 @@
 
 - [New network] Ability for pool's admin to create a new network within the pool (PR [#5873](https://github.com/vatesfr/xen-orchestra/pull/5873))
 - [Netbox] Synchronize primary IPv4 and IPv6 addresses [#5633](https://github.com/vatesfr/xen-orchestra/issues/5633) (PR [#5879](https://github.com/vatesfr/xen-orchestra/pull/5879))
+- [Host] Add warning in case of unmaintained host version [#5840](https://github.com/vatesfr/xen-orchestra/issues/5840) (PR [#5847](https://github.com/vatesfr/xen-orchestra/pull/5847))
 
 ### Bug fixes
 
diff --git a/packages/xo-web/src/common/intl/messages.js b/packages/xo-web/src/common/intl/messages.js
index c170a223f..ec2ba2908 100644
--- a/packages/xo-web/src/common/intl/messages.js
+++ b/packages/xo-web/src/common/intl/messages.js
@@ -838,6 +838,9 @@ const messages = {
   addHostNotHomogeneousErrorMessage: 'Host patches could not be homogenized.',
   disconnectServer: 'Disconnect',
 
+  // ----- Host item ------
+  noMoreMaintained: 'This host version is no longer maintained',
+
   // ----- Host actions ------
   disableMaintenanceMode: 'Disable maintenance mode',
   enableMaintenanceMode: 'Enable maintenance mode',
diff --git a/packages/xo-web/src/common/xo/index.js b/packages/xo-web/src/common/xo/index.js
index 2f223a3e9..8dc589c2e 100644
--- a/packages/xo-web/src/common/xo/index.js
+++ b/packages/xo-web/src/common/xo/index.js
@@ -4,6 +4,7 @@ import fpSortBy from 'lodash/fp/sortBy'
 import React from 'react'
 import updater from 'xoa-updater'
 import URL from 'url-parse'
+import * as xoaPlans from 'xoa-plans'
 import Xo from 'xo-lib'
 import { createBackoff } from 'jsonrpc-websocket-client'
 import { get as getDefined } from '@xen-orchestra/defined'
@@ -166,9 +167,9 @@ export const resolveUrl = invoke(
 )
 
 // -------------------------------------------------------------------
-
-const createSubscription = cb => {
-  const delay = 5e3 // 5s
+// Default subscription 5s
+const createSubscription = (cb, { polling = 5e3 } = {}) => {
+  const delay = polling
   const clearCacheDelay = 6e5 // 10m
 
   // contains active and lazy subscribers
@@ -300,6 +301,17 @@ export const subscribeCurrentUser = createSubscription(() => xo.refreshUser())
 
 export const subscribeAcls = createSubscription(() => _call('acl.get'))
 
+export const subscribeHvSupportedVersions = createSubscription(
+  async () => {
+    try {
+      return await _call('xoa.getHVSupportedVersions')
+    } catch (error) {
+      console.error(error)
+    }
+  },
+  { polling: 1e3 * 60 * 60 } // 1h
+)
+
 export const subscribeJobs = createSubscription(() => _call('job.getAll'))
 
 export const subscribeJobsLogs = createSubscription(() => _call('log.get', { namespace: 'jobs' }))
diff --git a/packages/xo-web/src/xo-app/home/host-item.js b/packages/xo-web/src/xo-app/home/host-item.js
index d79ace186..6df7aa55c 100644
--- a/packages/xo-web/src/xo-app/home/host-item.js
+++ b/packages/xo-web/src/xo-app/home/host-item.js
@@ -7,13 +7,14 @@ import isEmpty from 'lodash/isEmpty'
 import Link, { BlockLink } from 'link'
 import map from 'lodash/map'
 import React from 'react'
+import semver from 'semver'
 import SingleLineRow from 'single-line-row'
 import HomeTags from 'home-tags'
 import Tooltip from 'tooltip'
 import { Row, Col } from 'grid'
 import { Text } from 'editable'
-import { addTag, editHost, fetchHostStats, removeTag, startHost, stopHost } from 'xo'
-import { connectStore, formatSizeShort, hasLicenseRestrictions, osFamily } from 'utils'
+import { addTag, editHost, fetchHostStats, removeTag, startHost, stopHost, subscribeHvSupportedVersions } from 'xo'
+import { addSubscriptions, connectStore, formatSizeShort, hasLicenseRestrictions, osFamily } from 'utils'
 import {
   createDoesHostNeedRestart,
   createGetHostState,
@@ -26,6 +27,9 @@ import MiniStats from './mini-stats'
 import LicenseWarning from '../host/license-warning'
 import styles from './index.css'
 
+@addSubscriptions({
+  hvSupportedVersions: subscribeHvSupportedVersions,
+})
 @connectStore(() => ({
   container: createGetObject((_, props) => props.item.$pool),
   needsRestart: createDoesHostNeedRestart((_, props) => props.item),
@@ -43,6 +47,16 @@ export default class HostItem extends Component {
     return host && host.power_state === 'Running'
   }
 
+  _isMaintained = createSelector(
+    () => this.props.hvSupportedVersions,
+    () => this.props.item,
+    (supportedVersions, host) =>
+      // If could not fetch the list of maintained versions, consider this host up to date
+      supportedVersions?.[host.productBrand] === undefined
+        ? true
+        : semver.satisfies(host.version, supportedVersions[host.productBrand])
+  )
+
   _addTag = tag => addTag(this.props.item.id, tag)
   _fetchStats = () => fetchHostStats(this.props.item.id)
   _removeTag = tag => removeTag(this.props.item.id, tag)
@@ -97,6 +111,12 @@ export default class HostItem extends Component {
                   </Tooltip>
                 )}
                 &nbsp;
+                {!this._isMaintained() && (
+                  <Tooltip content={_('noMoreMaintained')}>
+                    <Icon className='text-warning' icon='alarm' />
+                  </Tooltip>
+                )}
+                &nbsp;
                 <InconsistentHostTimeWarning host={host} />
                 &nbsp;
                 {hasLicenseRestrictions(host) && <LicenseWarning />}