diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index f157eb24317..c0d0b076829 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -63,6 +63,7 @@ Yii Framework 2 Change Log
 - Enh #12748: Added Migration tool automatic generation reference column for foreignKey (MKiselev)
 - Enh #12748: Migration generator now tries to fetch reference column name for foreignKey from schema if it's not set explicitly (MKiselev)
 - Enh #12750: `yii\widgets\ListView::itemOptions` can be a closure now (webdevsega, silverfire)
+- Enh #12771: Skip \yii\rbac\PhpManager::checkAccessRecursive and \yii\rbac\DbManager::checkAccessRecursive if role assignments are empty (Ni-san)
 - Enh #12790: Added `scrollToErrorOffset` option for `yii\widgets\ActiveForm` which adds ability to specify offset in pixels when scrolling to error (mg-code)
 - Enh #12798: Changed `yii\cache\Dependency::getHasChanged()` (deprecated, to be removed in 2.1) to `yii\cache\Dependency::isChanged()` (dynasource)
 - Enh #12807: Added console controller checks for `yii\console\controllers\HelpController` (schmunk42)
diff --git a/framework/rbac/BaseManager.php b/framework/rbac/BaseManager.php
index 98460ff198d..f1e4b318614 100644
--- a/framework/rbac/BaseManager.php
+++ b/framework/rbac/BaseManager.php
@@ -222,4 +222,16 @@ protected function executeRule($user, $item, $params)
             throw new InvalidConfigException("Rule not found: {$item->ruleName}");
         }
     }
+
+    /**
+     * Checks whether $assignments array is empty and [[defaultRoles]] are empty as well.
+     *
+     * @param Assignment[] $assignments array of user's assignments
+     * @return bool whether $assignments array is empty and [[defaultRoles]] are empty as well
+     * @since 2.0.11
+     */
+    protected function hasNoAssignments(array $assignments)
+    {
+        return empty($assignments) && empty($this->defaultRoles);
+    }
 }
diff --git a/framework/rbac/DbManager.php b/framework/rbac/DbManager.php
index b38d5fecad7..1935bdf6e6b 100644
--- a/framework/rbac/DbManager.php
+++ b/framework/rbac/DbManager.php
@@ -121,6 +121,11 @@ public function init()
     public function checkAccess($userId, $permissionName, $params = [])
     {
         $assignments = $this->getAssignments($userId);
+
+        if ($this->hasNoAssignments($assignments)) {
+            return false;
+        }
+
         $this->loadFromCache();
         if ($this->items !== null) {
             return $this->checkAccessFromCache($userId, $permissionName, $params, $assignments);
diff --git a/framework/rbac/PhpManager.php b/framework/rbac/PhpManager.php
index 432653d376f..71cce73b932 100644
--- a/framework/rbac/PhpManager.php
+++ b/framework/rbac/PhpManager.php
@@ -99,6 +99,11 @@ public function init()
     public function checkAccess($userId, $permissionName, $params = [])
     {
         $assignments = $this->getAssignments($userId);
+
+        if ($this->hasNoAssignments($assignments)) {
+            return false;
+        }
+
         return $this->checkAccessRecursive($userId, $permissionName, $params, $assignments);
     }
 
diff --git a/tests/framework/rbac/ManagerTestCase.php b/tests/framework/rbac/ManagerTestCase.php
index 4fc10d260d2..70c30b11931 100644
--- a/tests/framework/rbac/ManagerTestCase.php
+++ b/tests/framework/rbac/ManagerTestCase.php
@@ -182,6 +182,16 @@ public function testCheckAccess()
                 'blablabla' => false,
                 null => false,
             ],
+            'guest' => [
+                // all actions denied for guest (user not exists)
+                'createPost' => false,
+                'readPost' => false,
+                'updatePost' => false,
+                'deletePost' => false,
+                'updateAnyPost' => false,
+                'blablabla' => false,
+                null => false,
+            ],
         ];
 
         $params = ['authorID' => 'author B'];