diff --git a/typo3/sysext/core/Classes/Utility/ArrayUtility.php b/typo3/sysext/core/Classes/Utility/ArrayUtility.php
index 736f7370859abbbc0aaa0d0dab23604a53009071..ab97887b47f309582f02d0dbdf4a7bf402ac057e 100644
--- a/typo3/sysext/core/Classes/Utility/ArrayUtility.php
+++ b/typo3/sysext/core/Classes/Utility/ArrayUtility.php
@@ -192,7 +192,7 @@ class ArrayUtility
         // Loop through each part and extract its value
         $value = $array;
         foreach ($path as $segment) {
-            if (array_key_exists($segment, $value)) {
+            if (is_array($value) && array_key_exists($segment, $value)) {
                 // Replace current value with child
                 $value = $value[$segment];
             } else {
diff --git a/typo3/sysext/core/Tests/Unit/Utility/ArrayUtilityTest.php b/typo3/sysext/core/Tests/Unit/Utility/ArrayUtilityTest.php
index 080cded37846635c982a5676767eae5758eabc17..bd4b4cb764c264f2ae77f7bf65b765b4519d5aa7 100644
--- a/typo3/sysext/core/Tests/Unit/Utility/ArrayUtilityTest.php
+++ b/typo3/sysext/core/Tests/Unit/Utility/ArrayUtilityTest.php
@@ -291,6 +291,15 @@ class ArrayUtilityTest extends UnitTestCase
                 'foo/bar/baz',
                 false
             ],
+            'last segment is not an array' => [
+                [
+                    'foo' => [
+                        'baz' => 42
+                    ],
+                ],
+                'foo/baz/baz',
+                false
+            ],
             // Negative test: This could be improved and the test moved to
             // the valid data provider if the method supports this
             'doubletick encapsulated quoted doubletick does not work' => [