Mend.io Vulnerability Database

What is a CVE vulnerability ID? icon What is a WS vulnerability ID? icon What is an MSC vulnerability ID? icon
New vulnerability? Tell us about it!
icon

We found results for “”

CVE-2025-57808

Good to know:

icon

Date: September 1, 2025

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.

Severity Score

Related Resources (5)

https://nvd.nist.gov/vuln/detail/CVE-2025-57808
https://github.com/esphome/esphome
https://github.com/esphome/esphome/commit/2aceb56606ec8afec5f49c92e140c8050a6ccbe5
https://github.com/esphome/esphome/security/advisories/GHSA-mxh2-ccgj-8635
https://www.mend.io/vulnerability-database/CVE-2025-57808

Severity Score

Weakness Type (CWE)

Incorrect Implementation of Authentication Algorithm

CWE-303

Partial String Comparison

CWE-187

Top Fix

icon

Upgrade Version

Upgrade to version esphome - 2025.8.1;esphome - 2025.8.1;https://github.com/esphome/esphome.git - 2025.8.1

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): ADJACENT_NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): NONE

Do you need more information?

Contact Us