diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
index a86bac9fb95e9..9e06c9f3c73e0 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Configuration.php
@@ -1227,15 +1227,19 @@ private function addExceptionsSection(ArrayNodeDefinition $rootNode)
                             ->scalarNode('log_level')
                                 ->info('The level of log message. Null to let Symfony decide.')
                                 ->validate()
-                                    ->ifTrue(function ($v) use ($logLevels) { return !\in_array($v, $logLevels); })
+                                    ->ifTrue(function ($v) use ($logLevels) { return null !== $v && !\in_array($v, $logLevels, true); })
                                     ->thenInvalid(sprintf('The log level is not valid. Pick one among "%s".', implode('", "', $logLevels)))
                                 ->end()
                                 ->defaultNull()
                             ->end()
                             ->scalarNode('status_code')
-                                ->info('The status code of the response. Null to let Symfony decide.')
+                                ->info('The status code of the response. Null or 0 to let Symfony decide.')
+                                ->beforeNormalization()
+                                    ->ifTrue(function ($v) { return 0 === $v; })
+                                    ->then(function ($v) { return null; })
+                                ->end()
                                 ->validate()
-                                    ->ifTrue(function ($v) { return $v < 100 || $v > 599; })
+                                    ->ifTrue(function ($v) { return null !== $v && ($v < 100 || $v > 599); })
                                     ->thenInvalid('The status code is not valid. Pick a value between 100 and 599.')
                                 ->end()
                                 ->defaultNull()
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/exceptions.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/exceptions.php
index 5d0dde0e0ac64..96b128f97b010 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/exceptions.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/php/exceptions.php
@@ -1,6 +1,9 @@
 <?php
 
 use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+use Symfony\Component\HttpKernel\Exception\ConflictHttpException;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException;
 
 $container->loadFromExtension('framework', [
     'exceptions' => [
@@ -8,5 +11,17 @@
             'log_level' => 'info',
             'status_code' => 422,
         ],
+        NotFoundHttpException::class => [
+            'log_level' => 'info',
+            'status_code' => null,
+        ],
+        ConflictHttpException::class => [
+            'log_level' => 'info',
+            'status_code' => 0,
+        ],
+        ServiceUnavailableHttpException::class => [
+            'log_level' => null,
+            'status_code' => 500,
+        ],
     ],
 ]);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/xml/exceptions.xml b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/xml/exceptions.xml
index cc73b8de3ced6..49878fc118b50 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/xml/exceptions.xml
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/xml/exceptions.xml
@@ -8,6 +8,9 @@
     <framework:config>
         <framework:exceptions>
             <framework:exception name="Symfony\Component\HttpKernel\Exception\BadRequestHttpException" log-level="info" status-code="422" />
+            <framework:exception name="Symfony\Component\HttpKernel\Exception\NotFoundHttpException" log-level="info" status-code="0" />
+            <framework:exception name="Symfony\Component\HttpKernel\Exception\ConflictHttpException" log-level="info" status-code="0" />
+            <framework:exception name="Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException" log-level="null" status-code="500" />
         </framework:exceptions>
     </framework:config>
 </container>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/yml/exceptions.yml b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/yml/exceptions.yml
index 82fab4e04a9f9..3958c4c5fd3fb 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/yml/exceptions.yml
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/Fixtures/yml/exceptions.yml
@@ -3,3 +3,12 @@ framework:
         Symfony\Component\HttpKernel\Exception\BadRequestHttpException:
             log_level: info
             status_code: 422
+        Symfony\Component\HttpKernel\Exception\NotFoundHttpException:
+            log_level: info
+            status_code: null
+        Symfony\Component\HttpKernel\Exception\ConflictHttpException:
+            log_level: info
+            status_code: 0
+        Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException:
+            log_level: null
+            status_code: 500
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index 36d0f441ccf8c..82687f503b484 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -550,6 +550,18 @@ public function testExceptionsConfig()
                 'log_level' => 'info',
                 'status_code' => 422,
             ],
+            \Symfony\Component\HttpKernel\Exception\NotFoundHttpException::class => [
+                'log_level' => 'info',
+                'status_code' => null,
+            ],
+            \Symfony\Component\HttpKernel\Exception\ConflictHttpException::class => [
+                'log_level' => 'info',
+                'status_code' => null,
+            ],
+            \Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException::class => [
+                'log_level' => null,
+                'status_code' => 500,
+            ],
         ], $container->getDefinition('exception_listener')->getArgument(3));
     }
 
diff --git a/src/Symfony/Component/HttpKernel/EventListener/ErrorListener.php b/src/Symfony/Component/HttpKernel/EventListener/ErrorListener.php
index 9dc3871c25df7..b6fd0a357d6fe 100644
--- a/src/Symfony/Component/HttpKernel/EventListener/ErrorListener.php
+++ b/src/Symfony/Component/HttpKernel/EventListener/ErrorListener.php
@@ -33,8 +33,14 @@ class ErrorListener implements EventSubscriberInterface
     protected $controller;
     protected $logger;
     protected $debug;
+    /**
+     * @var array<class-string, array{log_level: string|null, status_code: int<100,599>|null}>
+     */
     protected $exceptionsMapping;
 
+    /**
+     * @param array<class-string, array{log_level: string|null, status_code: int<100,599>|null}> $exceptionsMapping
+     */
     public function __construct($controller, LoggerInterface $logger = null, bool $debug = false, array $exceptionsMapping = [])
     {
         $this->controller = $controller;