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    CVE-2020-8341

    In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). After resuming from S3 sleep mode in various versions of BIOS for some Lenovo ThinkPad systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected.

    Published:Sep 1, 2020
    Last Modified:Nov 21, 2024
    EPS:Sep 1, 2020
    EPSS Score:0.00058
    CVSS Score:2.4

    Affected Products

    Vendor
    Lenovo
    Product
    Thinkpad T490 \(20nx\)
    Vendor
    Lenovo
    Product
    Thinkpad T490 \(20nx\) Firmware
    Vendor
    Lenovo
    Product
    Thinkpad T490 \(20qx\)
    Vendor
    Lenovo
    Product
    Thinkpad T490 \(20qx\) Firmware
    Vendor
    Lenovo
    Product
    Thinkpad T490 \(20rx\)
    Vendor
    Lenovo
    Product
    Thinkpad T490 \(20rx\) Firmware
    Vendor
    Lenovo
    Product
    Thinkpad T490s \(20nx\)
    Vendor
    Lenovo
    Product
    Thinkpad T490s \(20nx\) Firmware
    Vendor
    Lenovo
    Product
    Thinkpad T495 Drift
    Vendor
    Lenovo
    Product
    Thinkpad T495 Drift Firmware
    Vendor
    Lenovo
    Product
    Thinkpad T590 \(20nx\)
    Vendor
    Lenovo
    Product
    Thinkpad T590 \(20nx\) Firmware
    Vendor
    Lenovo
    Product
    Thinkpad X1 Carbon \(20qx\)
    Vendor
    Lenovo
    Product
    Thinkpad X1 Carbon \(20qx\) Firmware
    Vendor
    Lenovo
    Product
    Thinkpad X1 Yoga \(20qx\)
    Vendor
    Lenovo
    Product
    Thinkpad X1 Yoga \(20qx\) Firmware
    Vendor
    Lenovo
    Product
    Thinkpad X390 \(20qx\)
    Vendor
    Lenovo
    Product
    Thinkpad X390 \(20qx\) Firmware
    Vendor
    Lenovo
    Product
    Thinkpad X390 \(20sx\)
    Vendor
    Lenovo
    Product
    Thinkpad X390 \(20sx\) Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    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