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    CVE-2022-4020

    Vulnerability in the HQSwSmiDxe DXE driver on some consumer Acer Notebook devices may allow an attacker with elevated privileges to modify UEFI Secure Boot settings by modifying an NVRAM variable.

    Published:Nov 28, 2022
    Last Modified:Apr 14, 2025
    EPS:Nov 28, 2022
    EPSS Score:0.00066
    CVSS Score:8.1

    Affected Products

    Vendor
    Acer
    Product
    Aspire A115-21
    Vendor
    Acer
    Product
    Aspire A115-21 Firmware
    Vendor
    Acer
    Product
    Aspire A315-22
    Vendor
    Acer
    Product
    Aspire A315-22 Firmware
    Vendor
    Acer
    Product
    Aspire A315-22g
    Vendor
    Acer
    Product
    Aspire A315-22g Firmware
    Vendor
    Acer
    Product
    Extensa Ex215-21
    Vendor
    Acer
    Product
    Extensa Ex215-21 Firmware
    Vendor
    Acer
    Product
    Extensa Ex215-21g
    Vendor
    Acer
    Product
    Extensa Ex215-21g Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-276 Incorrect Default Permissions

    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