diff --git a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
index 5f2a830268981..3570493e712c6 100644
--- a/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
+++ b/src/Symfony/Component/Serializer/Normalizer/AbstractObjectNormalizer.php
@@ -512,6 +512,18 @@ private function validateAndDenormalizeLegacy(array $types, string $currentClass
                     }
                 }
 
+                if (is_numeric($data) && XmlEncoder::FORMAT === $format) {
+                    // encoder parsed them wrong, so they might need to be transformed back
+                    switch ($builtinType) {
+                        case LegacyType::BUILTIN_TYPE_STRING:
+                            return (string) $data;
+                        case LegacyType::BUILTIN_TYPE_FLOAT:
+                            return (float) $data;
+                        case LegacyType::BUILTIN_TYPE_INT:
+                            return (int) $data;
+                    }
+                }
+
                 if (null !== $collectionValueType && LegacyType::BUILTIN_TYPE_OBJECT === $collectionValueType->getBuiltinType()) {
                     $builtinType = LegacyType::BUILTIN_TYPE_OBJECT;
                     $class = $collectionValueType->getClassName().'[]';
@@ -748,6 +760,18 @@ private function validateAndDenormalize(Type $type, string $currentClass, string
                     }
                 }
 
+                if (is_numeric($data) && XmlEncoder::FORMAT === $format) {
+                    // encoder parsed them wrong, so they might need to be transformed back
+                    switch ($typeIdentifier) {
+                        case TypeIdentifier::STRING:
+                            return (string) $data;
+                        case TypeIdentifier::FLOAT:
+                            return (float) $data;
+                        case TypeIdentifier::INT:
+                            return (int) $data;
+                    }
+                }
+
                 if ($collectionValueType) {
                     try {
                         $collectionValueBaseType = $collectionValueType;
diff --git a/src/Symfony/Component/Serializer/Tests/Fixtures/Attributes/SerializedNameAttributeDummy.php b/src/Symfony/Component/Serializer/Tests/Fixtures/Attributes/SerializedNameAttributeDummy.php
new file mode 100644
index 0000000000000..968ea2bb92968
--- /dev/null
+++ b/src/Symfony/Component/Serializer/Tests/Fixtures/Attributes/SerializedNameAttributeDummy.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace Symfony\Component\Serializer\Tests\Fixtures\Attributes;
+
+use Symfony\Component\Serializer\Attribute\SerializedName;
+
+class SerializedNameAttributeDummy
+{
+    #[SerializedName('@foo')]
+    public string $foo;
+}
diff --git a/src/Symfony/Component/Serializer/Tests/SerializerTest.php b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
index 8fd0ff8850f63..16b88a32d0442 100644
--- a/src/Symfony/Component/Serializer/Tests/SerializerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
@@ -33,6 +33,7 @@
 use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactory;
 use Symfony\Component\Serializer\Mapping\Factory\ClassMetadataFactoryInterface;
 use Symfony\Component\Serializer\Mapping\Loader\AttributeLoader;
+use Symfony\Component\Serializer\NameConverter\MetadataAwareNameConverter;
 use Symfony\Component\Serializer\Normalizer\AbstractNormalizer;
 use Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer;
 use Symfony\Component\Serializer\Normalizer\ArrayDenormalizer;
@@ -54,6 +55,7 @@
 use Symfony\Component\Serializer\Tests\Fixtures\Attributes\AbstractDummy;
 use Symfony\Component\Serializer\Tests\Fixtures\Attributes\AbstractDummyFirstChild;
 use Symfony\Component\Serializer\Tests\Fixtures\Attributes\AbstractDummySecondChild;
+use Symfony\Component\Serializer\Tests\Fixtures\Attributes\SerializedNameAttributeDummy;
 use Symfony\Component\Serializer\Tests\Fixtures\DenormalizableDummy;
 use Symfony\Component\Serializer\Tests\Fixtures\DummyFirstChildQuux;
 use Symfony\Component\Serializer\Tests\Fixtures\DummyMessageInterface;
@@ -794,6 +796,18 @@ public function testDeserializeNullableIntInXml()
         $this->assertNull($obj->value);
     }
 
+    public function testDeserializeIntAsStringPropertyInXML()
+    {
+        $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());
+        $nameConverter = new MetadataAwareNameConverter($classMetadataFactory);
+        $extractor = new PropertyInfoExtractor([], [new ReflectionExtractor()]);
+        $serializer = new Serializer([new ObjectNormalizer($classMetadataFactory, $nameConverter, null, $extractor)], ['xml' => new XmlEncoder()]);
+
+        $obj = $serializer->deserialize('<?xml version="1.0" encoding="UTF-8"?><NameAttributeDummy foo="123" />', SerializedNameAttributeDummy::class, 'xml');
+
+        $this->assertSame('123', $obj->foo);
+    }
+
     public function testUnionTypeDeserializable()
     {
         $classMetadataFactory = new ClassMetadataFactory(new AttributeLoader());