CVE-2025-57808 (GCVE-0-2025-57808)
Vulnerability from cvelistv5
Published
2025-09-02 00:26
Modified
2025-09-02 14:03
Severity ?
8.1 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-303 - Incorrect Implementation of Authentication Algorithm
Summary
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.
References
security-advisories@github.comhttps://github.com/esphome/esphome/commit/2aceb56606ec8afec5f49c92e140c8050a6ccbe5
security-advisories@github.comhttps://github.com/esphome/esphome/security/advisories/GHSA-mxh2-ccgj-8635
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/esphome/esphome/security/advisories/GHSA-mxh2-ccgj-8635
Impacted products
Vendor Product Version
esphome esphome Version: = 2025.8.0
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