diff --git a/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRule.php b/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRule.php
index e61a9a2426a..e4daff744ee 100644
--- a/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRule.php
+++ b/src/Rules/Properties/ReadOnlyByPhpDocPropertyAssignRule.php
@@ -48,9 +48,6 @@ public function processNode(Node $node, Scope $scope): array
 		}
 
 		$inCloneWith = (bool) $propertyFetch->getAttribute('inCloneWith', false);
-		if ($inCloneWith) {
-			return [];
-		}
 
 		$inFunction = $scope->getFunction();
 		if (
@@ -80,16 +77,26 @@ public function processNode(Node $node, Scope $scope): array
 
 			$declaringClass = $nativeReflection->getDeclaringClass();
 
-			if (!$scope->isInClass()) {
-				$errors[] = RuleErrorBuilder::message(sprintf('@readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
-					->line($propertyFetch->name->getStartLine())
-					->identifier('property.readOnlyByPhpDocAssignOutOfClass')
-					->build();
+			$scopeClassReflection = $scope->isInClass() ? $scope->getClassReflection() : null;
+			$isOutsideDeclaringClass = $scopeClassReflection === null
+				|| $scopeClassReflection->getName() !== $declaringClass->getName();
+
+			if ($inCloneWith) {
+				if (
+					$isOutsideDeclaringClass
+					&& $declaringClass->isReadOnly()
+					&& $nativeReflection->isPublic()
+					&& !$nativeReflection->isPrivateSet()
+				) {
+					$errors[] = RuleErrorBuilder::message(sprintf('@readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+						->line($propertyFetch->name->getStartLine())
+						->identifier('property.readOnlyByPhpDocAssignOutOfClass')
+						->build();
+				}
 				continue;
 			}
 
-			$scopeClassReflection = $scope->getClassReflection();
-			if ($scopeClassReflection->getName() !== $declaringClass->getName()) {
+			if ($isOutsideDeclaringClass) {
 				$errors[] = RuleErrorBuilder::message(sprintf('@readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
 					->line($propertyFetch->name->getStartLine())
 					->identifier('property.readOnlyByPhpDocAssignOutOfClass')
diff --git a/src/Rules/Properties/ReadOnlyPropertyAssignRule.php b/src/Rules/Properties/ReadOnlyPropertyAssignRule.php
index 987e000256e..3c0c3c17565 100644
--- a/src/Rules/Properties/ReadOnlyPropertyAssignRule.php
+++ b/src/Rules/Properties/ReadOnlyPropertyAssignRule.php
@@ -47,9 +47,6 @@ public function processNode(Node $node, Scope $scope): array
 		}
 
 		$inCloneWith = (bool) $propertyFetch->getAttribute('inCloneWith', false);
-		if ($inCloneWith) {
-			return [];
-		}
 
 		$errors = [];
 		$reflections = $this->propertyReflectionFinder->findPropertyReflectionsFromNode($propertyFetch, $scope);
@@ -67,16 +64,26 @@ public function processNode(Node $node, Scope $scope): array
 
 			$declaringClass = $nativeReflection->getDeclaringClass();
 
-			if (!$scope->isInClass()) {
-				$errors[] = RuleErrorBuilder::message(sprintf('Readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
-					->line($propertyFetch->name->getStartLine())
-					->identifier('property.readOnlyAssignOutOfClass')
-					->build();
+			$scopeClassReflection = $scope->isInClass() ? $scope->getClassReflection() : null;
+			$isOutsideDeclaringClass = $scopeClassReflection === null
+				|| $scopeClassReflection->getName() !== $declaringClass->getName();
+
+			if ($inCloneWith) {
+				if (
+					$isOutsideDeclaringClass
+					&& $declaringClass->isReadOnly()
+					&& $nativeReflection->isPublic()
+					&& !$nativeReflection->isPrivateSet()
+				) {
+					$errors[] = RuleErrorBuilder::message(sprintf('Readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
+						->line($propertyFetch->name->getStartLine())
+						->identifier('property.readOnlyAssignOutOfClass')
+						->build();
+				}
 				continue;
 			}
 
-			$scopeClassReflection = $scope->getClassReflection();
-			if ($scopeClassReflection->getName() !== $declaringClass->getName()) {
+			if ($isOutsideDeclaringClass) {
 				$errors[] = RuleErrorBuilder::message(sprintf('Readonly property %s::$%s is assigned outside of its declaring class.', $declaringClass->getDisplayName(), $propertyReflection->getName()))
 					->line($propertyFetch->name->getStartLine())
 					->identifier('property.readOnlyAssignOutOfClass')
diff --git a/tests/PHPStan/Rules/Properties/AccessPropertiesInAssignRuleTest.php b/tests/PHPStan/Rules/Properties/AccessPropertiesInAssignRuleTest.php
index 6fb0fe27d5d..87f474cb50c 100644
--- a/tests/PHPStan/Rules/Properties/AccessPropertiesInAssignRuleTest.php
+++ b/tests/PHPStan/Rules/Properties/AccessPropertiesInAssignRuleTest.php
@@ -234,4 +234,27 @@ public function testCloneWith(): void
 		]);
 	}
 
+	#[RequiresPhp('>= 8.5')]
+	public function testBug14063(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-14063.php'], [
+			[
+				'Assign to protected(set) property Bug14063\Qux::$value.',
+				65,
+			],
+			[
+				'Assign to protected(set) property Bug14063\Bar::$value.',
+				68,
+			],
+			[
+				'Access to protected property Bug14063\Baz::$prot.',
+				71,
+			],
+			[
+				'Access to private property Bug14063\Baz::$priv.',
+				71,
+			],
+		]);
+	}
+
 }
diff --git a/tests/PHPStan/Rules/Properties/ReadOnlyPropertyAssignRuleTest.php b/tests/PHPStan/Rules/Properties/ReadOnlyPropertyAssignRuleTest.php
index 40bbb2d5c32..1654c528ce9 100644
--- a/tests/PHPStan/Rules/Properties/ReadOnlyPropertyAssignRuleTest.php
+++ b/tests/PHPStan/Rules/Properties/ReadOnlyPropertyAssignRuleTest.php
@@ -180,4 +180,19 @@ public function testCloneWith(): void
 		$this->analyse([__DIR__ . '/data/readonly-property-assign-clone-with.php'], []);
 	}
 
+	#[RequiresPhp('>= 8.5')]
+	public function testBug14063(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-14063.php'], [
+			[
+				'Readonly property Bug14063\Obj::$value is assigned outside of its declaring class.',
+				62,
+			],
+			[
+				'Readonly property Bug14063\Baz::$pub is assigned outside of its declaring class.',
+				71,
+			],
+		]);
+	}
+
 }
diff --git a/tests/PHPStan/Rules/Properties/data/bug-14063.php b/tests/PHPStan/Rules/Properties/data/bug-14063.php
new file mode 100644
index 00000000000..5d05a62a172
--- /dev/null
+++ b/tests/PHPStan/Rules/Properties/data/bug-14063.php
@@ -0,0 +1,76 @@
+<?php // lint >= 8.5
+
+declare(strict_types = 1);
+
+namespace Bug14063;
+
+final readonly class Obj
+{
+	public function __construct(public string $value) {}
+
+	public function doFoo(): void
+	{
+		clone($this, ['value' => 'newVal']);
+	}
+}
+
+class Bar
+{
+	public readonly string $value;
+
+	public function __construct(string $value)
+	{
+		$this->value = $value;
+	}
+
+	public function doFoo(): void
+	{
+		clone($this, ['value' => 'newVal']);
+	}
+}
+
+readonly class Baz
+{
+	public function __construct(
+		public string $pub,
+		protected string $prot,
+		private string $priv,
+	) {}
+
+	public function doFoo(): void
+	{
+		clone($this, [
+			'pub' => 'newVal',
+			'prot' => 'newVal',
+			'priv' => 'newVal',
+		]);
+	}
+}
+
+// non-readonly class with promoted public readonly property
+final class Qux
+{
+	public function __construct(public readonly string $value) {}
+
+	public function doFoo(): void
+	{
+		clone($this, ['value' => 'newVal']);
+	}
+}
+
+$obj = new Obj('val');
+$newObj = clone($obj, ['value' => 'newVal']);
+
+$qux = new Qux('val');
+$newQux = clone($qux, ['value' => 'newVal']);
+
+$bar = new Bar('val');
+$newBar = clone($bar, ['value' => 'newVal']);
+
+function (Baz $baz): void {
+	clone($baz, [
+		'pub' => 'newVal',
+		'prot' => 'newVal',
+		'priv' => 'newVal',
+	]);
+};