diff --git a/components/bt/esp_ble_mesh/api/core/esp_ble_mesh_provisioning_api.c b/components/bt/esp_ble_mesh/api/core/esp_ble_mesh_provisioning_api.c
index 095a369773..684142510c 100644
--- a/components/bt/esp_ble_mesh/api/core/esp_ble_mesh_provisioning_api.c
+++ b/components/bt/esp_ble_mesh/api/core/esp_ble_mesh_provisioning_api.c
@@ -128,7 +128,8 @@ esp_err_t esp_ble_mesh_node_input_string(const char *string)
     msg.pid = BTC_PID_PROV;
     msg.act = BTC_BLE_MESH_ACT_INPUT_STRING;
     memset(arg.input_string.string, 0, sizeof(arg.input_string.string));
-    strncpy(arg.input_string.string, string, strlen(string));
+    strncpy(arg.input_string.string, string,
+        MIN(strlen(string), sizeof(arg.input_string.string)));
 
     return (btc_transfer_context(&msg, &arg, sizeof(btc_ble_mesh_prov_args_t), NULL)
             == BT_STATUS_SUCCESS ? ESP_OK : ESP_FAIL);
@@ -196,7 +197,8 @@ esp_err_t esp_ble_mesh_provisioner_input_string(const char *string, uint8_t link
     msg.act = BTC_BLE_MESH_ACT_PROVISIONER_INPUT_STR;
 
     memset(arg.provisioner_input_str.string, 0, sizeof(arg.provisioner_input_str.string));
-    strncpy(arg.provisioner_input_str.string, string, strlen(string));
+    strncpy(arg.provisioner_input_str.string, string,
+        MIN(strlen(string), sizeof(arg.provisioner_input_str.string)));
     arg.provisioner_input_str.link_idx = link_idx;
 
     return (btc_transfer_context(&msg, &arg, sizeof(btc_ble_mesh_prov_args_t), NULL)
diff --git a/components/bt/esp_ble_mesh/api/esp_ble_mesh_defs.h b/components/bt/esp_ble_mesh/api/esp_ble_mesh_defs.h
index ff908c82b7..1f3fdb66e1 100644
--- a/components/bt/esp_ble_mesh/api/esp_ble_mesh_defs.h
+++ b/components/bt/esp_ble_mesh/api/esp_ble_mesh_defs.h
@@ -699,7 +699,7 @@ typedef struct {
     uint8_t  dev_key[16];   /*!< Node device key */
 
     /* Additional information */
-    char name[ESP_BLE_MESH_NODE_NAME_MAX_LEN]; /*!< Node name */
+    char name[ESP_BLE_MESH_NODE_NAME_MAX_LEN + 1]; /*!< Node name */
     uint16_t comp_length;  /*!< Length of Composition Data */
     uint8_t *comp_data;    /*!< Value of Composition Data */
     uint32_t last_hb;      /*!< Time (in seconds) when the last heartbeat is received */
diff --git a/components/bt/esp_ble_mesh/btc/btc_ble_mesh_prov.c b/components/bt/esp_ble_mesh/btc/btc_ble_mesh_prov.c
index 2b2f723444..680120dbef 100644
--- a/components/bt/esp_ble_mesh/btc/btc_ble_mesh_prov.c
+++ b/components/bt/esp_ble_mesh/btc/btc_ble_mesh_prov.c
@@ -560,7 +560,8 @@ static int btc_ble_mesh_output_string_cb(const char *str)
 
     BT_DBG("%s", __func__);
 
-    strncpy(mesh_param.node_prov_output_str.string, str, strlen(str));
+    strncpy(mesh_param.node_prov_output_str.string, str,
+        MIN(strlen(str), sizeof(mesh_param.node_prov_output_str.string)));
 
     ret = btc_ble_mesh_prov_callback(&mesh_param, ESP_BLE_MESH_NODE_PROV_OUTPUT_STRING_EVT);
     return (ret == BT_STATUS_SUCCESS) ? 0 : -1;
diff --git a/components/bt/esp_ble_mesh/btc/include/btc_ble_mesh_prov.h b/components/bt/esp_ble_mesh/btc/include/btc_ble_mesh_prov.h
index 57a47b485d..761e0fc035 100644
--- a/components/bt/esp_ble_mesh/btc/include/btc_ble_mesh_prov.h
+++ b/components/bt/esp_ble_mesh/btc/include/btc_ble_mesh_prov.h
@@ -165,7 +165,7 @@ typedef union {
     } set_primary_elem_addr;
     struct ble_mesh_provisioner_set_node_name_args {
         uint16_t index;
-        char name[ESP_BLE_MESH_NODE_NAME_MAX_LEN];
+        char name[ESP_BLE_MESH_NODE_NAME_MAX_LEN + 1];
     } set_node_name;
     struct ble_mesh_provisioner_add_local_app_key_args {
         uint8_t app_key[16];
diff --git a/components/bt/esp_ble_mesh/mesh_core/provisioner_main.c b/components/bt/esp_ble_mesh/mesh_core/provisioner_main.c
index ffa7fa0316..9d08ab7091 100644
--- a/components/bt/esp_ble_mesh/mesh_core/provisioner_main.c
+++ b/components/bt/esp_ble_mesh/mesh_core/provisioner_main.c
@@ -572,6 +572,8 @@ int bt_mesh_provisioner_restore_node_name(u16_t addr, const char *name)
     }
 
     strncpy(node->name, name, BLE_MESH_NODE_NAME_SIZE);
+    node->name[BLE_MESH_NODE_NAME_SIZE] = 0;
+
     return 0;
 }
 
@@ -717,7 +719,7 @@ int bt_mesh_provisioner_set_node_name(u16_t index, const char *name)
         }
     }
 
-    memset(mesh_nodes[index]->name, 0, BLE_MESH_NODE_NAME_SIZE);
+    memset(mesh_nodes[index]->name, 0, sizeof(mesh_nodes[index]->name));
 
     strncpy(mesh_nodes[index]->name, name, length);
     if (IS_ENABLED(CONFIG_BLE_MESH_SETTINGS)) {
diff --git a/components/bt/esp_ble_mesh/mesh_core/provisioner_main.h b/components/bt/esp_ble_mesh/mesh_core/provisioner_main.h
index 67eedf1fe3..532c644554 100644
--- a/components/bt/esp_ble_mesh/mesh_core/provisioner_main.h
+++ b/components/bt/esp_ble_mesh/mesh_core/provisioner_main.h
@@ -38,7 +38,7 @@ struct bt_mesh_node {
     u8_t  dev_key[16];  /* Node device key */
 
     /* Additional information */
-    char  name[BLE_MESH_NODE_NAME_SIZE]; /* Node name */
+    char  name[BLE_MESH_NODE_NAME_SIZE + 1]; /* Node name */
     u16_t comp_length;  /* Length of Composition Data */
     u8_t *comp_data;    /* Value of Composition Data */
     u32_t last_hb;      /* Time (in seconds) when the last heartbeat is received */
diff --git a/components/bt/esp_ble_mesh/mesh_core/proxy_server.c b/components/bt/esp_ble_mesh/mesh_core/proxy_server.c
index 676b533888..72e443a90b 100644
--- a/components/bt/esp_ble_mesh/mesh_core/proxy_server.c
+++ b/components/bt/esp_ble_mesh/mesh_core/proxy_server.c
@@ -109,7 +109,7 @@ static enum {
     MESH_GATT_PROXY,
 } gatt_svc = MESH_GATT_NONE;
 
-static char device_name[DEVICE_NAME_SIZE] = "ESP-BLE-MESH";
+static char device_name[DEVICE_NAME_SIZE + 1] = "ESP-BLE-MESH";
 
 int bt_mesh_set_device_name(const char *name)
 {
@@ -124,7 +124,7 @@ int bt_mesh_set_device_name(const char *name)
     }
 
     memset(device_name, 0x0, sizeof(device_name));
-    memcpy(device_name, name, strlen(name));
+    strncpy(device_name, name, DEVICE_NAME_SIZE);
 
     return bt_mesh_gatts_set_local_device_name(device_name);
 }
diff --git a/components/bt/esp_ble_mesh/mesh_core/settings.c b/components/bt/esp_ble_mesh/mesh_core/settings.c
index e0f54f62ef..9054986229 100644
--- a/components/bt/esp_ble_mesh/mesh_core/settings.c
+++ b/components/bt/esp_ble_mesh/mesh_core/settings.c
@@ -1121,7 +1121,7 @@ static int node_info_set(u16_t addr, bool prov, bool *exist)
 
 static int node_name_set(u16_t addr, bool prov)
 {
-    char name[BLE_MESH_NODE_NAME_SIZE] = {0};
+    char name[BLE_MESH_NODE_NAME_SIZE + 1] = {0};
     char get[16] = {'\0'};
     bool exist = false;
     int err = 0;
@@ -2688,7 +2688,7 @@ void bt_mesh_clear_node_info(u16_t unicast_addr, bool prov)
 
 void bt_mesh_store_node_name(struct bt_mesh_node *node, bool prov)
 {
-    char node_name[BLE_MESH_NODE_NAME_SIZE] = {0};
+    char node_name[BLE_MESH_NODE_NAME_SIZE + 1] = {0};
     char name[16] = {'\0'};
     int err = 0;
 
@@ -2697,7 +2697,7 @@ void bt_mesh_store_node_name(struct bt_mesh_node *node, bool prov)
         return;
     }
 
-    strncpy(node_name, node->name, BLE_MESH_NODE_NAME_SIZE);
+    strncpy(node_name, node->name, BLE_MESH_NODE_NAME_SIZE + 1);
 
     sprintf(name, prov ? "mesh/pn/%04x/n" : "mesh/sn/%04x/n", node->unicast_addr);
     err = bt_mesh_save_core_settings(name, (const u8_t *)node_name, BLE_MESH_NODE_NAME_SIZE);
diff --git a/examples/bluetooth/esp_ble_mesh/ble_mesh_fast_provision/ble_mesh_fast_prov_client/main/ble_mesh_demo_main.c b/examples/bluetooth/esp_ble_mesh/ble_mesh_fast_provision/ble_mesh_fast_prov_client/main/ble_mesh_demo_main.c
index 27e93638dc..926f96d984 100644
--- a/examples/bluetooth/esp_ble_mesh/ble_mesh_fast_provision/ble_mesh_fast_prov_client/main/ble_mesh_demo_main.c
+++ b/examples/bluetooth/esp_ble_mesh/ble_mesh_fast_provision/ble_mesh_fast_prov_client/main/ble_mesh_demo_main.c
@@ -138,7 +138,7 @@ static void provisioner_prov_complete(int node_index, const uint8_t uuid[16], ui
                                       uint8_t elem_num, uint16_t net_idx)
 {
     example_node_info_t *node = NULL;
-    char name[10];
+    char name[11] = {0};
     esp_err_t err;
 
     ESP_LOGI(TAG, "Node index: 0x%x, unicast address: 0x%02x, element num: %d, netkey index: 0x%02x",
diff --git a/examples/bluetooth/esp_ble_mesh/ble_mesh_provisioner/main/ble_mesh_demo_main.c b/examples/bluetooth/esp_ble_mesh/ble_mesh_provisioner/main/ble_mesh_demo_main.c
index d85fcad7f9..4be356ad69 100644
--- a/examples/bluetooth/esp_ble_mesh/ble_mesh_provisioner/main/ble_mesh_demo_main.c
+++ b/examples/bluetooth/esp_ble_mesh/ble_mesh_provisioner/main/ble_mesh_demo_main.c
@@ -191,7 +191,7 @@ static esp_err_t prov_complete(int node_idx, const esp_ble_mesh_octet16_t uuid,
     esp_ble_mesh_client_common_param_t common = {0};
     esp_ble_mesh_cfg_client_get_state_t get_state = {0};
     esp_ble_mesh_node_info_t *node = NULL;
-    char name[10];
+    char name[11] = {0};
     int err;
 
     ESP_LOGI(TAG, "node index: 0x%x, unicast address: 0x%02x, element num: %d, netkey index: 0x%02x",