CVE-2025-57808
HIGHEPSS 74th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
Elevated risk: more likely to be exploited than 74% of all known CVEs.
References
Related Vulnerabilities
Other CWE-303 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-7593 | Critical | 9.8 | 100% | KEV | - |
| CVE-2023-29357 | Critical | 9.8 | 100% | KEV + Ransom | Fix |
| CVE-2020-8863 | High | 8.8 | 77% | - | - |
| CVE-2023-32152 | Medium | 6.5 | 29% | - | - |
| CVE-2023-32148 | Medium | 6.5 | 29% | - | - |
| CVE-2022-20695 | Critical | 10.0 | 20% | - | - |
Common questions
How do I fix CVE-2025-57808?
Upgrade esphome to 2025.8.1 or later.
Is CVE-2025-57808 being actively exploited?
Not that we know of. CVE-2025-57808 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 74% of all scored CVEs.
How severe is CVE-2025-57808?
CVE-2025-57808 has a CVSS v3 base score of 8.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2025-57808 affect?
Published advisories record a fix for esphome (PyPI (Python)). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2025-57808
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.