diff --git i/components/ble/ble_services/ble_dfu/ble_dfu_bonded.c w/components/ble/ble_services/ble_dfu/ble_dfu_bonded.c
index d4c0a194..eca51948 100644
--- i/components/ble/ble_services/ble_dfu/ble_dfu_bonded.c
+++ w/components/ble/ble_services/ble_dfu/ble_dfu_bonded.c
@@ -51,6 +51,7 @@
 #include "peer_id.h"
 #include "nrf_sdh_soc.h"
 #include "nrf_strerror.h"
+#include "app_util_platform.h"
 
 #if (NRF_DFU_BLE_BUTTONLESS_SUPPORTS_BONDS)
 
@@ -204,24 +205,33 @@ uint32_t ble_dfu_buttonless_backend_init(ble_dfu_buttonless_t * p_dfu)
 
 uint32_t ble_dfu_buttonless_async_svci_init(void)
 {
-    uint32_t ret;
+    uint32_t ret = NRF_SUCCESS;
+    uint32_t svc_ret;
+
+    CRITICAL_REGION_ENTER();
 
     // Set the vector table base address to the bootloader.
-    ret = nrf_dfu_svci_vector_table_set();
+    svc_ret = nrf_dfu_svci_vector_table_set();
     NRF_LOG_DEBUG("nrf_dfu_svci_vector_table_set() -> %s",
-                  (ret == NRF_SUCCESS) ? "success" : nrf_strerror_get(ret));
-    VERIFY_SUCCESS(ret);
+                  (ret == NRF_SUCCESS) ? "success" : nrf_strerror_get(svc_ret));
+    if (svc_ret == NRF_SUCCESS) {
+        // Initialize the asynchronous SuperVisor interface to set peer data in Secure DFU bootloader.
+        ret = nrf_dfu_set_peer_data_init();
+        NRF_LOG_DEBUG("nrf_dfu_set_peer_data_init() -> %s",
+                (ret == NRF_SUCCESS) ? "success" : nrf_strerror_get(ret));
+
+        // Set the vector table base address back to main application.
+        svc_ret = nrf_dfu_svci_vector_table_unset();
+        NRF_LOG_DEBUG("nrf_dfu_svci_vector_table_unset() -> %s",
+                (svc_ret == NRF_SUCCESS) ? "success" : nrf_strerror_get(svc_ret));
+    }
 
-    // Initialize the asynchronous SuperVisor interface to set peer data in Secure DFU bootloader.
-    ret = nrf_dfu_set_peer_data_init();
-    NRF_LOG_DEBUG("nrf_dfu_set_peer_data_init() -> %s",
-                  (ret == NRF_SUCCESS) ? "success" : nrf_strerror_get(ret));
-    VERIFY_SUCCESS(ret);
+    CRITICAL_REGION_EXIT();
 
-    // Set the vector table base address back to main application.
-    ret = nrf_dfu_svci_vector_table_unset();
-    NRF_LOG_DEBUG("nrf_dfu_svci_vector_table_unset() -> %s",
-                  (ret == NRF_SUCCESS) ? "success" : nrf_strerror_get(ret));
+    if (ret == NRF_SUCCESS) {
+        // May be multiple errors, return first error encountered.
+        ret = svc_ret;
+    }
 
     return ret;
 }
diff --git i/components/ble/ble_services/ble_dfu/ble_dfu_unbonded.c w/components/ble/ble_services/ble_dfu/ble_dfu_unbonded.c
index 1326e663..18540070 100644
--- i/components/ble/ble_services/ble_dfu/ble_dfu_unbonded.c
+++ w/components/ble/ble_services/ble_dfu/ble_dfu_unbonded.c
@@ -143,15 +143,25 @@ uint32_t ble_dfu_buttonless_backend_init(ble_dfu_buttonless_t * p_dfu)
 
 uint32_t ble_dfu_buttonless_async_svci_init(void)
 {
-    uint32_t ret_val;
+    uint32_t ret_val = NRF_SUCCESS;
+    uint32_t svc_ret;
 
-    ret_val = nrf_dfu_svci_vector_table_set();
-    VERIFY_SUCCESS(ret_val);
+    CRITICAL_REGION_ENTER();
 
-    ret_val = nrf_dfu_set_adv_name_init();
-    VERIFY_SUCCESS(ret_val);
+    svc_ret = nrf_dfu_svci_vector_table_set();
+    if (svc_ret == NRF_SUCCESS) {
 
-    ret_val = nrf_dfu_svci_vector_table_unset();
+        ret_val = nrf_dfu_set_adv_name_init();
+
+        svc_ret = nrf_dfu_svci_vector_table_unset();
+    }
+
+    CRITICAL_REGION_EXIT();
+
+    if (ret_val == NRF_SUCCESS) {
+        // May be multiple errors, return first error encountered.
+        ret_val = svc_ret;
+    }
 
     return ret_val;
 }