diff --git a/core/lib/Drupal/Core/Entity/Plugin/DataType/EntityAdapter.php b/core/lib/Drupal/Core/Entity/Plugin/DataType/EntityAdapter.php
index db194b5485..8577f25c98 100644
--- a/core/lib/Drupal/Core/Entity/Plugin/DataType/EntityAdapter.php
+++ b/core/lib/Drupal/Core/Entity/Plugin/DataType/EntityAdapter.php
@@ -2,6 +2,7 @@
 
 namespace Drupal\Core\Entity\Plugin\DataType;
 
+use Drupal\Core\Config\Entity\ConfigEntityInterface;
 use Drupal\Core\Entity\FieldableEntityInterface;
 use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Entity\TypedData\EntityDataDefinition;
@@ -78,9 +79,7 @@ public function get($property_name) {
       throw new MissingDataException("Unable to get property $property_name as no entity has been provided.");
     }
     if (!$this->entity instanceof FieldableEntityInterface) {
-      // @todo: Add support for config entities in
-      // https://www.drupal.org/node/1818574.
-      throw new \InvalidArgumentException("Unable to get unknown property $property_name.");
+      return $this->getConfigTypedData()->get($property_name);
     }
     // This will throw an exception for unknown fields.
     return $this->entity->get($property_name);
@@ -93,13 +92,14 @@ public function set($property_name, $value, $notify = TRUE) {
     if (!isset($this->entity)) {
       throw new MissingDataException("Unable to set property $property_name as no entity has been provided.");
     }
-    if (!$this->entity instanceof FieldableEntityInterface) {
-      // @todo: Add support for config entities in
-      // https://www.drupal.org/node/1818574.
-      throw new \InvalidArgumentException("Unable to set unknown property $property_name.");
+    if ($this->entity instanceof ConfigEntityInterface) {
+      $this->entity->set($property_name, $value, $notify);
     }
-    // This will throw an exception for unknown fields.
-    $this->entity->set($property_name, $value, $notify);
+    else {
+      // This will throw an exception for unknown fields.
+      $this->entity->set($property_name, $value, $notify);
+    }
+
     return $this;
   }
 
@@ -111,9 +111,7 @@ public function getProperties($include_computed = FALSE) {
       throw new MissingDataException('Unable to get properties as no entity has been provided.');
     }
     if (!$this->entity instanceof FieldableEntityInterface) {
-      // @todo: Add support for config entities in
-      // https://www.drupal.org/node/1818574.
-      return [];
+      return $this->getConfigTypedData()->getProperties($include_computed);
     }
     return $this->entity->getFields($include_computed);
   }
@@ -167,7 +165,57 @@ public function applyDefaultValue($notify = TRUE) {
    * {@inheritdoc}
    */
   public function getIterator() {
-    return isset($this->entity) ? $this->entity->getIterator() : new \ArrayIterator([]);
+    if (isset($this->entity)) {
+      if ($this->entity instanceof ConfigEntityInterface) {
+        return $this->getConfigTypedData()->getIterator();
+      }
+      else {
+        return $this->entity->getIterator();
+      }
+    }
+    return new \ArrayIterator([]);
+  }
+
+  /**
+   * Gets the typed data manager.
+   *
+   * @return \Drupal\Core\TypedData\TypedDataManagerInterface
+   *   The typed data manager.
+   */
+  public function getTypedDataManager() {
+    if (empty($this->typedDataManager)) {
+      if ($this->entity instanceof ConfigEntityInterface) {
+        $this->typedDataManager = \Drupal::service('config.typed');
+      }
+      else {
+        $this->typedDataManager = \Drupal::typedDataManager();
+      }
+    }
+
+    return $this->typedDataManager;
   }
 
+  /**
+   * Get typed data for config entity.
+   *
+   * @return \Drupal\Core\TypedData\TraversableTypedDataInterface
+   *   The typed data.
+   */
+  protected function getConfigTypedData() {
+    /** @var \Drupal\Core\Config\TypedConfigManagerInterface $type_config_manager */
+    $type_config_manager = \Drupal::service('config.typed');
+    return $type_config_manager->createFromNameAndData($this->entity->getConfigDependencyName(), $this->entity->toArray());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validate() {
+    if ($this->entity instanceof ConfigEntityInterface) {
+      return $this->getConfigTypedData()->validate();
+    }
+    return parent::validate();
+  }
+
+
 }
diff --git a/core/tests/Drupal/KernelTests/Core/Entity/ConfigEntityAdapterTest.php b/core/tests/Drupal/KernelTests/Core/Entity/ConfigEntityAdapterTest.php
new file mode 100644
index 0000000000..5da54c513b
--- /dev/null
+++ b/core/tests/Drupal/KernelTests/Core/Entity/ConfigEntityAdapterTest.php
@@ -0,0 +1,98 @@
+<?php
+
+
+namespace Drupal\KernelTests\Core\Entity;
+
+
+use Drupal\Core\Entity\Plugin\DataType\EntityAdapter;
+use Drupal\KernelTests\KernelTestBase;
+
+/**
+ * Tests Entity Adapter for ConfigEntities.
+ *
+ * @see \Drupal\Core\Entity\Plugin\DataType\EntityAdapter
+ *
+ * @group Entity
+ */
+class ConfigEntityAdapterTest extends KernelTestBase {
+
+  /**
+   * Modules to install.
+   *
+   * @var array
+   */
+  public static $modules = ['config_test'];
+
+  /**
+   * The config entity.
+   *
+   * @var \Drupal\config_test\Entity\ConfigTest
+   */
+  protected $entity;
+
+  protected function setUp() {
+    parent::setUp();
+    $this->installConfig(static::$modules);
+
+    $this->entity = entity_create('config_test', [
+      'id' => 'system',
+      'label' => 'foobar',
+      'weight' => 1,
+    ]);
+  }
+
+  public function testValidate() {
+    $adapter = EntityAdapter::createFromEntity($this->entity);
+    $violations = $adapter->validate();
+    $this->assertEmpty($violations);
+    $this->entity = entity_create('config_test', [
+      'id' => 'system',
+      'label' => 'foobar',
+      // Set weight to be a string which should not validate.
+      'weight' => "very heavy",
+    ]);
+    $adapter = EntityAdapter::createFromEntity($this->entity);
+    $violations = $adapter->validate();
+    $this->assertCount(1, $violations);
+    $violation = $violations->get(0);
+    $this->assertEquals('This value should be of the correct primitive type.', $violation->getMessage());
+    $this->assertEquals('weight', $violation->getPropertyPath());
+  }
+
+  public function testGetProperties() {
+    $expected_properties = [
+      'uuid' => 'Drupal\Core\TypedData\Plugin\DataType\StringData',
+      'langcode' => 'Drupal\Core\TypedData\Plugin\DataType\StringData',
+      'status' => 'Drupal\Core\TypedData\Plugin\DataType\BooleanData',
+      'dependencies' => 'Drupal\Core\Config\Schema\Mapping',
+      'id' => 'Drupal\Core\TypedData\Plugin\DataType\StringData',
+      'label' => 'Drupal\Core\TypedData\Plugin\DataType\StringData',
+      'weight' => 'Drupal\Core\TypedData\Plugin\DataType\IntegerData',
+      'style' => 'Drupal\Core\TypedData\Plugin\DataType\StringData',
+      'size' => 'Drupal\Core\TypedData\Plugin\DataType\StringData',
+      'size_value' => 'Drupal\Core\TypedData\Plugin\DataType\StringData',
+      'protected_property' => 'Drupal\Core\TypedData\Plugin\DataType\StringData',
+    ];
+    $properties = EntityAdapter::createFromEntity($this->entity)->getProperties();
+    $keys = [];
+    foreach ($properties as $key => $property) {
+      $keys[] = $key;
+      $this->assertEquals($expected_properties[$key], get_class($property));
+    }
+    $this->assertSame(array_keys($expected_properties), $keys);
+  }
+
+  public function testGetProperty() {
+    $adapter = EntityAdapter::createFromEntity($this->entity);
+    $this->assertEquals($this->entity->weight, $adapter->get('weight')->getValue());
+    $this->assertEquals($this->entity->id(), $adapter->get('id')->getValue());
+    $this->assertEquals($this->entity->label, $adapter->get('label')->getValue());
+  }
+
+  public function testSetProperty() {
+    $adapter = EntityAdapter::createFromEntity($this->entity);
+    $adapter->set('weight', 2);
+    $this->assertEquals(2, $this->entity->weight);
+  }
+
+}