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    CVE-2023-48733

    An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. This allows an OS-resident attacker to bypass Secure Boot.

    Published:Feb 14, 2024
    Last Modified:Aug 26, 2025
    EPS:Feb 14, 2024
    EPSS Score:0.00013
    CVSS Score:6.7

    Affected Products

    Vendor
    Canonical
    Product
    Lxd
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Tianocore
    Product
    Edk2

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

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    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