diff --git a/3rdparty/protobuf/CMakeLists.txt b/3rdparty/protobuf/CMakeLists.txt
index fd5bb93bd0..4e556ebd65 100644
--- a/3rdparty/protobuf/CMakeLists.txt
+++ b/3rdparty/protobuf/CMakeLists.txt
@@ -11,6 +11,8 @@ if(MSVC)
   ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4244 /wd4267 /wd4018 /wd4355 /wd4800 /wd4251 /wd4996 /wd4146
                                        /wd4305 /wd4127 /wd4100 /wd4512 /wd4125 /wd4389 /wd4510 /wd4610
                                        /wd4702 /wd4456 /wd4457 /wd4065 /wd4310 /wd4661 /wd4506
+                                       /wd4701 /wd4703     # potentially uninitialized local/pointer variable 'value' used
+                                       /wd4505             # unreferenced local function has been removed
   )
 else()
   #NOTE: -Wno-invalid-offsetof was used as solution for invalid offset warning on protobuf #3450
diff --git a/modules/dnn/CMakeLists.txt b/modules/dnn/CMakeLists.txt
index f3ebb36dac..985a63ba31 100644
--- a/modules/dnn/CMakeLists.txt
+++ b/modules/dnn/CMakeLists.txt
@@ -52,7 +52,10 @@ ocv_warnings_disable(CMAKE_CXX_FLAGS
     -Wdeprecated-declarations
     /wd4125 /wd4267 /wd4127 /wd4244 /wd4512 /wd4702
     /wd4456 /wd4510 /wd4610 /wd4800
+    /wd4701 /wd4703                    # potentially uninitialized local/pointer variable 'value' used
+    /wd4505                            # unreferenced local function has been removed
     -wd858 -wd2196
+    -Winvalid-offsetof                 # Apple Clang (attr_value.pb.cc)
 )
 
 if(PROTOBUF_UPDATE_FILES)