diff --git a/esphome/components/api/api_outgoing_connection.cpp b/esphome/components/api/api_outgoing_connection.cpp
index 374735ad46..5f3a425c6a 100644
--- a/esphome/components/api/api_outgoing_connection.cpp
+++ b/esphome/components/api/api_outgoing_connection.cpp
@@ -20,6 +20,8 @@ void OutgoingConnectionManager::setup() {
 #ifndef API_OUTGOING_CONNECTION_HOST
   this->target_pref_ = global_preferences->make_preference<SavedOutgoingTarget>(629847102UL, true);
   if (this->target_pref_.load(&this->saved_)) {
+    // Defend against a corrupt or truncated blob before the first read
+    this->saved_.host[sizeof(this->saved_.host) - 1] = '\0';
     this->host_persisted_ = true;
     ESP_LOGD(TAG, "Loaded target %s", this->saved_.host);
   } else {
@@ -27,8 +29,6 @@ void OutgoingConnectionManager::setup() {
     ESP_LOGD(TAG, "No saved target");
     this->saved_ = {};
   }
-  // Defend against a corrupt or truncated preference blob
-  this->saved_.host[sizeof(this->saved_.host) - 1] = '\0';
 #endif
 }
 
diff --git a/esphome/components/udp/udp_component.cpp b/esphome/components/udp/udp_component.cpp
index 6af4c56e47..c6df8dbc3e 100644
--- a/esphome/components/udp/udp_component.cpp
+++ b/esphome/components/udp/udp_component.cpp
@@ -101,9 +101,15 @@ void UDPComponent::setup() {
   // 8266 and RP2040 `Duino
   for (const auto &address : this->addresses_) {
     auto ipaddr = IPAddress();
-    ipaddr.fromString(address);
+    if (!ipaddr.fromString(address)) {
+      ESP_LOGW(TAG, "Invalid address %s", address);
+      continue;
+    }
     this->ipaddrs_.push_back(ipaddr);
   }
+  if (this->ipaddrs_.size() != this->addresses_.size()) {
+    this->status_set_warning(LOG_STR("invalid address"));
+  }
   if (this->should_listen_)
     this->udp_client_.begin(this->listen_port_);
 #endif
diff --git a/tests/component_tests/api/test_outgoing_connection.py b/tests/component_tests/api/test_outgoing_connection.py
index bb09910d89..48d512cf48 100644
--- a/tests/component_tests/api/test_outgoing_connection.py
+++ b/tests/component_tests/api/test_outgoing_connection.py
@@ -5,6 +5,7 @@ from pathlib import Path
 
 import pytest
 
+from esphome.components import socket
 from esphome.components.api import (
     CONFIG_SCHEMA,
     _validate_outgoing_host_ipv6,
@@ -14,6 +15,7 @@ from esphome.components.esp32 import KEY_BOARD, KEY_VARIANT, VARIANT_ESP32
 import esphome.config_validation as cv
 from esphome.const import PlatformFramework
 from esphome.core import CORE
+import esphome.final_validate as fv
 from esphome.types import ConfigType
 from tests.component_tests.types import SetCoreConfigCallable
 
@@ -81,26 +83,28 @@ def test_outgoing_connection_requires_encryption(
 
 
 @pytest.mark.parametrize(
-    ("platform_framework", "platform_data"),
+    ("platform_framework", "platform_data", "socket_conf"),
     [
-        # The platform default on these two
-        (PlatformFramework.ESP8266_ARDUINO, None),
-        (PlatformFramework.RP2040_ARDUINO, None),
+        # The platform default on these two, resolved like AUTO_LOAD does
+        (PlatformFramework.ESP8266_ARDUINO, None, None),
+        (PlatformFramework.RP2040_ARDUINO, None, None),
         # An explicit selection elsewhere
-        (PlatformFramework.ESP32_IDF, ESP32_PLATFORM_DATA),
+        (
+            PlatformFramework.ESP32_IDF,
+            ESP32_PLATFORM_DATA,
+            {"implementation": "lwip_tcp"},
+        ),
     ],
 )
 def test_outgoing_connection_rejects_lwip_tcp(
     set_core_config: SetCoreConfigCallable,
     platform_framework: PlatformFramework,
     platform_data: ConfigType | None,
+    socket_conf: ConfigType | None,
 ) -> None:
     """The resolved lwip_tcp socket is rejected at final validate."""
-    set_core_config(
-        platform_framework,
-        platform_data=platform_data,
-        full_config={"socket": {"implementation": "lwip_tcp"}},
-    )
+    set_core_config(platform_framework, platform_data=platform_data)
+    fv.full_config.set({"socket": socket_conf or socket.CONFIG_SCHEMA({})})
     config = CONFIG_SCHEMA(_api_config({"host": "192.168.1.2"}))
     with pytest.raises(cv.Invalid, match="lwip_tcp"):
         _validate_outgoing_socket_implementation(config)