diff --git a/modules/fbx/editor_scene_importer_fbx.cpp b/modules/fbx/editor_scene_importer_fbx.cpp
index 4d15ca93c171..55d524883f69 100644
--- a/modules/fbx/editor_scene_importer_fbx.cpp
+++ b/modules/fbx/editor_scene_importer_fbx.cpp
@@ -104,6 +104,9 @@ Node3D *EditorSceneImporterFBX::import_scene(const String &p_path, uint32_t p_fl
 
 		bool is_binary = false;
 		data.resize(f->get_len());
+
+		ERR_FAIL_COND_V(data.size() < 64, NULL);
+
 		f->get_buffer(data.ptrw(), data.size());
 		PackedByteArray fbx_header;
 		fbx_header.resize(64);