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    CVE-2020-12834

    eQ-3 Homematic Central Control Unit (CCU)2 through 2.51.6 and CCU3 through 3.51.6 allow Remote Code Execution in the JSON API Method ReGa.runScript, by unauthenticated attackers with access to the web interface, due to the default auto-login feature being enabled during first-time setup (or factory reset).

    Published:May 15, 2020
    Last Modified:Nov 21, 2024
    EPS:May 15, 2020
    EPSS Score:0.45806
    CVSS Score:9.8

    Affected Products

    Vendor
    Eq-3
    Product
    Ccu3 Firmware
    Vendor
    Eq-3
    Product
    Homematic Ccu2
    Vendor
    Eq-3
    Product
    Homematic Ccu2 Firmware
    Vendor
    Eq-3
    Product
    Homematic Ccu3

    Exploits

    https://psytester.github.io/CVE-2020-12834/https://psytester.github.io/CVE-2020-12834/

    Common Weakness Enumeration

    CWE-276 Incorrect Default Permissions

    Related CVEs

    CVE-2019-14474 (CVSS 7.5) — eQ-3 Homematic CCU3 3.47.15 and prior has Improper Input Validation in function 'Call()' of ReGa core logic pr…
    CVE-2019-14473 (CVSS 8.8) — eQ-3 Homematic CCU2 and CCU3 use session IDs for authentication but lack authorization checks. Consequently, a…
    CVE-2019-14475 (CVSS 7.5) — eQ-3 Homematic CCU2 2.47.15 and prior and CCU3 3.47.15 and prior use session IDs for authentication but lack a…
    CVE-2019-10122 (CVSS 9.8) — eQ-3 HomeMatic CCU2 devices before 2.41.9 and CCU3 devices before 3.43.16 have buffer overflows in the ReGa is…
    CVE-2019-10121 (CVSS 9.8) — eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication b…
    CVE-2019-10119 (CVSS 9.8) — eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.16 use session IDs for authentication b…
    CVE-2019-10120 (CVSS 8.8) — On eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.16, automatic login configuration (a…
    CVE-2019-9727 (CVSS 7.5) — Unauthenticated password hash disclosure in the User.getUserPWD method in eQ-3 AG Homematic CCU3 3.43.15 and e…
    CVE-2019-9726 (CVSS 7.5) — Directory Traversal / Arbitrary File Read in eQ-3 AG Homematic CCU3 3.43.15 and earlier allows remote attacker…

    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