diff --git a/esphome/components/esp32_ble_server/ble_characteristic.cpp b/esphome/components/esp32_ble_server/ble_characteristic.cpp
index 5ec74c2b47..48556974e5 100644
--- a/esphome/components/esp32_ble_server/ble_characteristic.cpp
+++ b/esphome/components/esp32_ble_server/ble_characteristic.cpp
@@ -33,10 +33,8 @@ BLECharacteristic::BLECharacteristic(const ESPBTUUID uuid, uint32_t properties)
 }
 
 void BLECharacteristic::set_value(ByteBuffer buffer) {
-  size_t length = buffer.get_capacity();
-  uint8_t *data = buffer.array();
   xSemaphoreTake(this->set_value_lock_, 0L);
-  this->value_ = std::vector<uint8_t>(data, data + length);
+  this->value_ = buffer.get_data();
   xSemaphoreGive(this->set_value_lock_);
 }
 
diff --git a/esphome/components/esp32_ble_server/ble_descriptor.cpp b/esphome/components/esp32_ble_server/ble_descriptor.cpp
index cc1d4ec62b..8f05ccfd2d 100644
--- a/esphome/components/esp32_ble_server/ble_descriptor.cpp
+++ b/esphome/components/esp32_ble_server/ble_descriptor.cpp
@@ -46,7 +46,7 @@ void BLEDescriptor::set_value(ByteBuffer buffer) {
     return;
   }
   this->value_.attr_len = length;
-  memcpy(this->value_.attr_value, buffer.array(), length);
+  memcpy(this->value_.attr_value, buffer.get_data().data(), length);
 }
 
 void BLEDescriptor::gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_if,