diff --git a/cmake/OpenCVDetectCUDA.cmake b/cmake/OpenCVDetectCUDA.cmake
index c2179da804..fd08dfd470 100644
--- a/cmake/OpenCVDetectCUDA.cmake
+++ b/cmake/OpenCVDetectCUDA.cmake
@@ -14,6 +14,10 @@ if(CUDA_TOOLKIT_ROOT_DIR)
   set(CUDA_TOOLKIT_TARGET_DIR ${CUDA_TOOLKIT_ROOT_DIR})
 endif()
 
+if(CMAKE_CUDA_HOST_COMPILER AND NOT CUDA_HOST_COMPILER)
+  set(CUDA_HOST_COMPILER "${CMAKE_CUDA_HOST_COMPILER}" CACHE FILEPATH "Host side compiler used by NVCC")
+endif()
+
 if(((NOT CMAKE_VERSION VERSION_LESS "3.9.0")  # requires https://gitlab.kitware.com/cmake/cmake/merge_requests/663
       OR OPENCV_CUDA_FORCE_EXTERNAL_CMAKE_MODULE)
     AND NOT OPENCV_CUDA_FORCE_BUILTIN_CMAKE_MODULE)
diff --git a/cmake/OpenCVDetectCUDAUtils.cmake b/cmake/OpenCVDetectCUDAUtils.cmake
index 8d2c87b443..808f6bb550 100644
--- a/cmake/OpenCVDetectCUDAUtils.cmake
+++ b/cmake/OpenCVDetectCUDAUtils.cmake
@@ -300,6 +300,9 @@ macro(ocv_set_cuda_arch_bin_and_ptx nvcc_executable)
           ${_arch_hopper}
           ${_arch_blackwell}
       )
+      if(NOT __cuda_arch_bin)
+        message(FATAL_ERROR "CUDA: No compatible CUDA architecture found. Please enable OPENCV_CMAKE_CUDA_DEBUG=1 for investigation.")
+      endif()
       list(GET __cuda_arch_bin -1 __cuda_arch_ptx)
     endif()
   endif()