diff --git a/pandas/_libs/arrays.pyx b/pandas/_libs/arrays.pyx
index 2932f3ff56396..6af01a7f6e6ae 100644
--- a/pandas/_libs/arrays.pyx
+++ b/pandas/_libs/arrays.pyx
@@ -100,6 +100,10 @@ cdef class NDArrayBacked:
                 if len(state) == 1 and isinstance(state[0], dict):
                     self.__setstate__(state[0])
                     return
+                elif len(state) == 2:
+                    # GH#62820: Handle missing attrs dict during auto-unpickling
+                    self.__setstate__((*state, {}))
+                    return
                 raise NotImplementedError(state)  # pragma: no cover
 
             data, dtype = state[:2]