CVE-2025-57808: ESP-IDF web_server basic auth bypass using empty or incomplete Authorization header
Affected: esphome · Exploitation: check available, not yet exploited
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 75% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- esphome · esphome= 2025.8.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
- CISA KEV
- Not listed
- Public check
- ESPHome - Authentication Bypass · nuclei template in projectdiscovery/nuclei-templates
- Vendor
- esphome
- Published
- September 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-57808 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.