CVE-2025-57808

HIGH EPSS 71.3%
Published Sep 2, 202510mo ago · Modified Jun 17, 20262w ago
8.1 CVSS 3.1
High
Find Similar
Published Sep 2, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.1
Exploitability
2.8
Impact
5.2
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
71.3% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-303

Affected Products 1

VendorProductVersionRange
esphomeesphome_firmware2025.8.0any

References 2

  • github.com https://github.com/esphome/esphome/commit/2aceb56606ec8afec5f49c92e140c8050a6ccbe5
    Patch
  • github.com https://github.com/esphome/esphome/security/advisories/GHSA-mxh2-ccgj-8635
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/esphome/esphome/commit/2aceb56606ec8afec5f49c92e140c8050a6ccbe5
    Patch