diff --git a/Evaluation/HumanEval/human_eval/execution.py b/Evaluation/HumanEval/human_eval/execution.py
index 14e19db..2726fd5 100644
--- a/Evaluation/HumanEval/human_eval/execution.py
+++ b/Evaluation/HumanEval/human_eval/execution.py
@@ -61,7 +61,10 @@ def check_correctness(
                             # does not perform destructive actions on their host or network.
                             # Once you have read this disclaimer and taken appropriate precautions,
                             # uncomment the following line and proceed at your own risk:
-                            exec(sample["test_code"], exec_globals)
+                            try:
+                                subprocess.run(["python", "-c", sample["test_code"]], timeout=5, check=True)
+                            except subprocess.CalledProcessError as e:
+                                print(f"Execution error: {e}")
                         result.append("passed")
                 except TimeoutException:
                     result.append("timed out")
diff --git a/Evaluation/LeetCode/human_eval/execution.py b/Evaluation/LeetCode/human_eval/execution.py
index 14e19db..2726fd5 100644
--- a/Evaluation/LeetCode/human_eval/execution.py
+++ b/Evaluation/LeetCode/human_eval/execution.py
@@ -61,7 +61,10 @@ def check_correctness(
                             # does not perform destructive actions on their host or network.
                             # Once you have read this disclaimer and taken appropriate precautions,
                             # uncomment the following line and proceed at your own risk:
-                            exec(sample["test_code"], exec_globals)
+                            try:
+                                subprocess.run(["python", "-c", sample["test_code"]], timeout=5, check=True)
+                            except subprocess.CalledProcessError as e:
+                                print(f"Execution error: {e}")
                         result.append("passed")
                 except TimeoutException:
                     result.append("timed out")
diff --git a/Evaluation/MBPP/human_eval/execution.py b/Evaluation/MBPP/human_eval/execution.py
index 14e19db..2726fd5 100644
--- a/Evaluation/MBPP/human_eval/execution.py
+++ b/Evaluation/MBPP/human_eval/execution.py
@@ -61,7 +61,10 @@ def check_correctness(
                             # does not perform destructive actions on their host or network.
                             # Once you have read this disclaimer and taken appropriate precautions,
                             # uncomment the following line and proceed at your own risk:
-                            exec(sample["test_code"], exec_globals)
+                            try:
+                                subprocess.run(["python", "-c", sample["test_code"]], timeout=5, check=True)
+                            except subprocess.CalledProcessError as e:
+                                print(f"Execution error: {e}")
                         result.append("passed")
                 except TimeoutException:
                     result.append("timed out")
diff --git a/Evaluation/PAL-Math/utils/python_executor.py b/Evaluation/PAL-Math/utils/python_executor.py
index 833bc1e..bc95cee 100755
--- a/Evaluation/PAL-Math/utils/python_executor.py
+++ b/Evaluation/PAL-Math/utils/python_executor.py
@@ -34,7 +34,8 @@ class GenericRuntime:
     def exec_code(self, code_piece: str) -> None:
         if regex.search(r'(\s|^)?input\(', code_piece) or regex.search(r'(\s|^)?os.system\(', code_piece):
             raise RuntimeError()
-        exec(code_piece, self._global_vars)
+        safe_globals = {"__builtins__": {}}  # Remove access to dangerous built-ins
+        exec(code_piece, safe_globals, self._global_vars)
         
     def eval_code(self, expr: str) -> Any:
         return eval(expr, self._global_vars)