diff --git a/test/functional/tests/security/fuzzy/kernel/fuzzy_standby/test_fuzzy_standby_detach_cache_id.py b/test/functional/tests/security/fuzzy/kernel/fuzzy_standby/test_fuzzy_standby_detach_cache_id.py
new file mode 100644
index 000000000..2f194f1c7
--- /dev/null
+++ b/test/functional/tests/security/fuzzy/kernel/fuzzy_standby/test_fuzzy_standby_detach_cache_id.py
@@ -0,0 +1,75 @@
+#
+# Copyright(c) 2023 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+import pytest
+from api.cas.cache_config import (
+    CacheLineSize,
+    KernelParameters,
+    UnalignedIo,
+    UseIoScheduler,
+)
+from api.cas import casadm
+from api.cas.cli import standby_detach_cmd
+from core.test_run import TestRun
+from storage_devices.disk import DiskType, DiskTypeSet
+from test_tools.peach_fuzzer.peach_fuzzer import PeachFuzzer
+from tests.security.fuzzy.kernel.common.common import get_fuzz_config, run_cmd_and_validate
+from test_utils.size import Size, Unit
+from time import sleep
+
+config_file = "cache_id.yml"
+iterations_count = 1000
+
+
+@pytest.mark.require_disk("cache", DiskTypeSet([DiskType.optane, DiskType.nand]))
+@pytest.mark.parametrizex("cache_line_size", CacheLineSize)
+@pytest.mark.parametrizex("unaligned_io", UnalignedIo)
+@pytest.mark.parametrizex("use_io_scheduler", UseIoScheduler)
+def test_fuzzy_standby_detach_cache_id(cache_line_size, unaligned_io, use_io_scheduler):
+    """
+    title: Fuzzy test for casadm 'standby detach' command.
+    description: Using Peach Fuzzer check CAS ability of handling wrong cache id in
+        'standby detach' command.
+    pass criteria:
+        - System did not crash
+        - Open CAS still works.
+    """
+
+    with TestRun.step("Prepare CAS instance"):
+        kernel_params = KernelParameters(unaligned_io, use_io_scheduler)
+        cache_dev = TestRun.disks["cache"]
+        cache_dev.create_partitions([Size(100, Unit.MebiByte)])
+        cache_part = cache_dev.partitions[0]
+        cache = casadm.standby_init(
+            cache_dev=cache_part,
+            cache_id=1,
+            cache_line_size=cache_line_size,
+            kernel_params=kernel_params,
+            force=True,
+        )
+        TestRun.executor.run_expect_success("udevadm settle")
+
+    with TestRun.step("Prepare Peach fuzzer to create 'standby detach' command and then run it"):
+        valid_values = [str(cache.cache_id).encode("ascii")]
+        PeachFuzzer.generate_config(get_fuzz_config("cache_id.yml"))
+        base_cmd = standby_detach_cmd(cache_id="{param}").encode("ascii")
+        commands = PeachFuzzer.get_fuzzed_command(base_cmd, iterations_count)
+
+        for index, cmd in TestRun.iteration(
+            enumerate(commands), f"Run command {iterations_count} times"
+        ):
+            with TestRun.step(f"Iteration {index+1}"):
+                is_valid = cmd.param in valid_values
+                run_cmd_and_validate(cmd, "cache_id:", is_valid)
+                if is_valid:
+                    cache.stop()
+                    cache = casadm.standby_init(
+                        cache_dev=cache_part,
+                        cache_id=1,
+                        cache_line_size=cache_line_size,
+                        kernel_params=kernel_params,
+                        force=True,
+                    )
+                    sleep(0.1)