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esphome@2025.12.3

ESPHome is a system to configure your microcontrollers by simple yet powerful configuration files and control them remotely through Home Automation systems.

  • latest version

    2026.6.4

  • latest non vulnerable version

    2026.6.4

  • first published

    7 years ago

  • latest version published

    4 days ago

  • licenses detected

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    Direct Vulnerabilities

    Known vulnerabilities in the esphome package. This does not include vulnerabilities belonging to this package’s dependencies.

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    VulnerabilityVulnerable Version
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    Integer Overflow or Wraparound

    esphome is a Make creating custom firmwares for ESP32/ESP8266 super easy.

    Affected versions of this package are vulnerable to Integer Overflow or Wraparound via the protobuf decoder in the API component. An attacker can cause the device to read invalid memory and crash by sending a maliciously crafted large field_length value, which triggers an integer overflow and bypasses the out-of-bounds check. This can be exploited remotely without authentication when API encryption is not enabled.

    Note:

    This is only exploitable if API encryption is disabled or, if enabled, the attacker possesses the encryption key.

    How to fix Integer Overflow or Wraparound?

    Upgrade esphome to version 2025.12.7 or higher.

    [2025.9.0,2025.12.7)
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