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    CVE-2021-27953

    A NULL pointer dereference vulnerability exists on the ecobee3 lite 4.5.81.200 device in the HomeKit Wireless Access Control setup process. A threat actor can exploit this vulnerability to cause a denial of service, forcing the device to reboot via a crafted HTTP request.

    Published:Aug 3, 2021
    Last Modified:Nov 21, 2024
    EPS:Aug 3, 2021
    EPSS Score:0.01258
    CVSS Score:7.5

    Affected Products

    Vendor
    Ecobee
    Product
    Ecobee3 Lite
    Vendor
    Ecobee
    Product
    Ecobee3 Lite Firmware

    Exploits

    https://www.l9group.com/advisories/remote-denial-of-service-of-ecobee3-litehttps://www.l9group.com/advisories/remote-denial-of-service-of-ecobee3-lite

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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