CVE-2025-57808
ESPHome is a system to control microcontrollers remotely through Home Automation systems. In version 2025.8.0 in the ESP-IDF platform, ESPHome's web_server authentication check can pass incorrectly when the client-supplied base64-encoded Authorization value is empty or is a substring of the correct value. This allows access to web_server functionality (including OTA, if enabled) without knowing any information about the correct username or password. This issue has been patched in version 2025.8.1.
| Software | From | Fixed in |
|---|---|---|
esphome
|
- | 2025.8.1 |
| esphome / esphome_firmware | 2025.8.0 | 2025.8.0.x |
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