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    CVE-2021-41104

    ESPHome is a system to control the ESP8266/ESP32. Anyone with web_server enabled and HTTP basic auth configured on version 2021.9.1 or older is vulnerable to an issue in which `web_server` allows over-the-air (OTA) updates without checking user defined basic auth username & password. This issue is patched in version 2021.9.2. As a workaround, one may disable or remove `web_server`.

    Published:Sep 28, 2021
    Last Modified:Nov 21, 2024
    EPS:Sep 28, 2021
    EPSS Score:0.00284
    CVSS Score:7.5

    Affected Products

    Vendor
    Esphome
    Product
    Esphome Firmware
    Vendor
    Espressif
    Product
    Esp32
    Vendor
    Espressif
    Product
    Esp8266

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High