diff --git a/Command/ConfigDebugCommand.php b/Command/ConfigDebugCommand.php
index 50c8dddf5..93b3b9068 100644
--- a/Command/ConfigDebugCommand.php
+++ b/Command/ConfigDebugCommand.php
@@ -161,7 +161,7 @@ private function getConfigForPath(array $config, string $path, string $alias): m
         $steps = explode('.', $path);
 
         foreach ($steps as $step) {
-            if (!\array_key_exists($step, $config)) {
+            if (!\is_array($config) || !\array_key_exists($step, $config)) {
                 throw new LogicException(\sprintf('Unable to find configuration for "%s.%s".', $alias, $path));
             }
 
diff --git a/Tests/Functional/ConfigDebugCommandTest.php b/Tests/Functional/ConfigDebugCommandTest.php
index ea4ee0788..259a9e738 100644
--- a/Tests/Functional/ConfigDebugCommandTest.php
+++ b/Tests/Functional/ConfigDebugCommandTest.php
@@ -233,6 +233,16 @@ public static function provideCompletionSuggestions(): \Generator
         yield 'option --format, debug' => [true, ['--format', ''], ['yaml', 'json']];
     }
 
+    public function testDumpPathDeepIntoScalar()
+    {
+        $tester = $this->createCommandTester(true);
+
+        $tester->execute(['name' => 'framework', 'path' => 'secret.foo']);
+
+        $this->assertSame(1, $tester->getStatusCode());
+        $this->assertStringContainsString('Unable to find configuration for "framework.secret.foo"', $tester->getDisplay());
+    }
+
     private function createCommandTester(bool $debug): CommandTester
     {
         $command = $this->createApplication($debug)->find('debug:config');