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    CVE-2018-3891

    An exploitable firmware downgrade vulnerability exists in the firmware update functionality of Yi Home Camera 27US 1.8.7.0D. A specially crafted file can cause a logic flaw, resulting in a firmware downgrade. An attacker can insert an SD card to trigger this vulnerability.

    Published:Nov 2, 2018
    Last Modified:Nov 21, 2024
    EPS:Nov 2, 2018
    EPSS Score:0.00127
    CVSS Score:4.6

    Affected Products

    Vendor
    Yitechnology
    Product
    Yi Home Camera
    Vendor
    Yitechnology
    Product
    Yi Home Camera Firmware

    Exploits

    https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0566https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0566

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-4478 (CVSS 8.2) — A vulnerability was identified in Yi Technology YI Home Camera 2 2.1.1_20171024151200. This impacts an unknown…
    CVE-2026-4477 (CVSS 1.3) — A vulnerability was determined in Yi Technology YI Home Camera 2 2.1.1_20171024151200. This affects an unknown…
    CVE-2026-4476 (CVSS 2.1) — A vulnerability was found in Yi Technology YI Home Camera 2 2.1.1_20171024151200. The impacted element is an u…
    CVE-2026-4475 (CVSS 7.4) — A vulnerability has been found in Yi Technology YI Home Camera 2 2.1.1_20171024151200. The affected element is…
    CVE-2018-3890 (CVSS 6.8) — An exploitable code execution vulnerability exists in the firmware update functionality of Yi Home Camera 27US…
    CVE-2018-3898 (CVSS 7.5) — An exploitable code execution vulnerability exists in the QR code scanning functionality of Yi Home Camera 27U…
    CVE-2018-3892 (CVSS 8.1) — An exploitable firmware downgrade vulnerability exists in the time syncing functionality of Yi Home Camera 27U…
    CVE-2018-3899 (CVSS 7.5) — An exploitable code execution vulnerability exists in the QR code scanning functionality of Yi Home Camera 27U…
    CVE-2018-3920 (CVSS 6.8) — An exploitable code execution vulnerability exists in the firmware update functionality of the Yi Home Camera …
    CVE-2018-3935 (CVSS 7.5) — An exploitable code execution vulnerability exists in the UDP network functionality of Yi Home Camera 27US 1.8…

    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