Try setting PSModulePath in cmd.script

salt/modules/cmdmod.py

@@ -2942,6 +2942,23 @@ def script(
     else:
         cmd_path = _cmd_quote(path)
 
+        if not env:
+            env = {}
+
+        paths = [
+            fr'{os.getenv("SystemRoot")}\System32\WindowsPowerShell\v1.0\Modules',
+            fr'{os.getenv("ProgramFiles")}\WindowsPowerShell\Modules',
+            fr'{os.getenv("ProgramFiles(x86)", "")}\WindowsPowerShell\Modules',
+        ]
+
+        ps_module_path = os.getenv("PSModulePath", "").split(";")
+
+        for path in paths:
+            if os.path.exists(path):
+                ps_module_path.append(path)
+
+        env.update({"PSModulePath": ";".join(ps_module_path)})
+
     ret = _run(
         cmd_path + " " + str(args) if args else cmd_path,
         cwd=cwd,

tests/pytests/functional/modules/cmd/test_script.py

@@ -57,13 +57,7 @@ def test_windows_script_args_powershell(cmd, shell, issue_56195):
     )
     script = "salt://issue-56195/test.ps1"
 
-    ret = cmd.script(
-        source=script,
-        args=args,
-        shell="powershell",
-        saltenv="base",
-        env={"PSModulePath": ""},
-    )
+    ret = cmd.script(source=script, args=args, shell="powershell", saltenv="base")
 
     assert ret["stdout"] == password