diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1374e4423..1464bae80 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,14 +22,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/745
 - Small tweak for version getter
   https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/744
+- Important bugfix for `LocalPool::delete` function, where an overflow could possibly lead to UB.
 
 ## Added
 
 - add CFDP subsystem ID
   https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/742
 - New object ID for persistent TM store PUS 15
+- `EventManager`: Add function to print all listeners.
 
 ## Changed
+
 - Bump ETL version to 20.35.14
   https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/748
 - Renamed `PCDU_2` subsystem ID to `POWER_SWITCH_IF`.
@@ -38,14 +41,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
   https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/743
 - Assert that `FixedArrayList` is larger than 0 at compile time.
   https://egit.irs.uni-stuttgart.de/fsfw/fsfw/pulls/740
-
-## Added
-
-- `EventManager`: Add function to print all listeners.
-
-## Changed
-
 - `EventManager`: Queue depth is configurable now
+- `ActionHelper`: Allow execution of actions without additional data
 
 # [v6.0.0] 2023-02-10
 
diff --git a/src/fsfw/action/ActionHelper.cpp b/src/fsfw/action/ActionHelper.cpp
index fd6c8afba..81a1a727c 100644
--- a/src/fsfw/action/ActionHelper.cpp
+++ b/src/fsfw/action/ActionHelper.cpp
@@ -59,17 +59,24 @@ void ActionHelper::setQueueToUse(MessageQueueIF* queue) { queueToUse = queue; }
 
 void ActionHelper::prepareExecution(MessageQueueId_t commandedBy, ActionId_t actionId,
                                     store_address_t dataAddress) {
+  bool hasAdditionalData = false;
   const uint8_t* dataPtr = nullptr;
   size_t size = 0;
-  ReturnValue_t result = ipcStore->getData(dataAddress, &dataPtr, &size);
-  if (result != returnvalue::OK) {
-    CommandMessage reply;
-    ActionMessage::setStepReply(&reply, actionId, 0, result);
-    queueToUse->sendMessage(commandedBy, &reply);
-    return;
+  ReturnValue_t result;
+  if (dataAddress != store_address_t::invalid()) {
+    hasAdditionalData = true;
+    ReturnValue_t result = ipcStore->getData(dataAddress, &dataPtr, &size);
+    if (result != returnvalue::OK) {
+      CommandMessage reply;
+      ActionMessage::setStepReply(&reply, actionId, 0, result);
+      queueToUse->sendMessage(commandedBy, &reply);
+      return;
+    }
   }
   result = owner->executeAction(actionId, commandedBy, dataPtr, size);
-  ipcStore->deleteData(dataAddress);
+  if (hasAdditionalData) {
+    ipcStore->deleteData(dataAddress);
+  }
   if (result == HasActionsIF::EXECUTION_FINISHED) {
     CommandMessage reply;
     ActionMessage::setCompletionReply(&reply, actionId, true, result);
diff --git a/src/fsfw/action/CommandActionHelper.h b/src/fsfw/action/CommandActionHelper.h
index 55176e09b..ac8ed1ba8 100644
--- a/src/fsfw/action/CommandActionHelper.h
+++ b/src/fsfw/action/CommandActionHelper.h
@@ -16,8 +16,8 @@ class CommandActionHelper {
  public:
   explicit CommandActionHelper(CommandsActionsIF* owner);
   virtual ~CommandActionHelper();
-  ReturnValue_t commandAction(object_id_t commandTo, ActionId_t actionId, const uint8_t* data,
-                              uint32_t size);
+  ReturnValue_t commandAction(object_id_t commandTo, ActionId_t actionId,
+                              const uint8_t* data = nullptr, uint32_t size = 0);
   ReturnValue_t commandAction(object_id_t commandTo, ActionId_t actionId, SerializeIF* data);
   ReturnValue_t initialize();
   ReturnValue_t handleReply(CommandMessage* reply);
diff --git a/src/fsfw/storagemanager/LocalPool.cpp b/src/fsfw/storagemanager/LocalPool.cpp
index b62c19b60..9a4b53a6d 100644
--- a/src/fsfw/storagemanager/LocalPool.cpp
+++ b/src/fsfw/storagemanager/LocalPool.cpp
@@ -89,7 +89,7 @@ ReturnValue_t LocalPool::deleteData(store_address_t storeId) {
   ReturnValue_t status = returnvalue::OK;
   size_type pageSize = getSubpoolElementSize(storeId.poolIndex);
   if ((pageSize != 0) and (storeId.packetIndex < numberOfElements[storeId.poolIndex])) {
-    uint16_t packetPosition = getRawPosition(storeId);
+    size_type packetPosition = getRawPosition(storeId);
     uint8_t* ptr = &store[storeId.poolIndex][packetPosition];
     std::memset(ptr, 0, pageSize);
     // Set free list
diff --git a/unittests/action/TestActionHelper.cpp b/unittests/action/TestActionHelper.cpp
index d99700d7a..de021bb83 100644
--- a/unittests/action/TestActionHelper.cpp
+++ b/unittests/action/TestActionHelper.cpp
@@ -27,12 +27,7 @@ TEST_CASE("Action Helper", "[action]") {
     CHECK(not testDhMock.executeActionCalled);
     REQUIRE(actionHelper.handleActionMessage(&actionMessage) == returnvalue::OK);
     CHECK(testDhMock.executeActionCalled);
-    // No message is sent if everything is alright.
     CHECK(not testMqMock.wasMessageSent());
-    store_address_t invalidAddress;
-    ActionMessage::setCommand(&actionMessage, testActionId, invalidAddress);
-    actionHelper.handleActionMessage(&actionMessage);
-    CHECK(testMqMock.wasMessageSent());
     const uint8_t* ptr = nullptr;
     size_t size = 0;
     REQUIRE(ipcStore->getData(paramAddress, &ptr, &size) ==
@@ -44,6 +39,10 @@ TEST_CASE("Action Helper", "[action]") {
     for (uint8_t i = 0; i < 3; i++) {
       REQUIRE(ptr[i] == (i + 1));
     }
+    // Action message without application data is also valid
+    store_address_t invalidAddress;
+    ActionMessage::setCommand(&actionMessage, testActionId, invalidAddress);
+    actionHelper.handleActionMessage(&actionMessage);
     testDhMock.clearBuffer();
   }
 
@@ -95,17 +94,5 @@ TEST_CASE("Action Helper", "[action]") {
     REQUIRE(ActionMessage::getActionId(&testMessage) == testActionId);
   }
 
-  SECTION("Missing IPC Data") {
-    ActionMessage::setCommand(&actionMessage, testActionId, store_address_t::invalid());
-    CHECK(not testDhMock.executeActionCalled);
-    REQUIRE(actionHelper.handleActionMessage(&actionMessage) == returnvalue::OK);
-    CommandMessage testMessage;
-    REQUIRE(testMqMock.getNextSentMessage(testMessage) == returnvalue::OK);
-    REQUIRE(testMessage.getCommand() == static_cast<uint32_t>(ActionMessage::STEP_FAILED));
-    REQUIRE(ActionMessage::getReturnCode(&testMessage) ==
-            static_cast<uint32_t>(StorageManagerIF::ILLEGAL_STORAGE_ID));
-    REQUIRE(ActionMessage::getStep(&testMessage) == 0);
-  }
-
   SECTION("Data Reply") {}
 }