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.
                
            Metrics
Affected Vendors & Products
References
        History
                    Wed, 10 Sep 2025 19:15:00 +0000
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        Esphome esphome Firmware
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| Weaknesses | NVD-CWE-noinfo | |
| CPEs | cpe:2.3:o:esphome:esphome_firmware:2025.8.0:*:*:*:*:*:*:* | |
| Vendors & Products | 
        
        Esphome esphome Firmware
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Tue, 02 Sep 2025 15:30:00 +0000
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        Esphome
         Esphome esphome  | 
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        Esphome
         Esphome esphome  | 
Tue, 02 Sep 2025 14:15:00 +0000
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        ssvc
         
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Tue, 02 Sep 2025 00:45:00 +0000
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| Description | 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. | |
| Title | ESP-IDF web_server basic auth bypass using empty or incomplete Authorization header | |
| Weaknesses | CWE-303 | |
| References | 
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| Metrics | 
        
        cvssV3_1
         
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-09-02T00:26:09.017Z
Updated: 2025-09-02T14:03:58.777Z
Reserved: 2025-08-20T14:30:35.010Z
Link: CVE-2025-57808
Updated: 2025-09-02T14:03:51.885Z
Status : Analyzed
Published: 2025-09-02T01:15:29.947
Modified: 2025-09-10T19:03:00.280
Link: CVE-2025-57808
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