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    CVE-2026-97631

    EDK2 contains a vulnerability in BIOS where a user may cause “Out-of-bounds Write”, Classic Buffer Overflow, and “Incorrect Calculation of Buffer Size” by remote access. Successful exploitation of this vulnerability can lead to arbitrary code execution. It could also impact Confidentiality, Integrity, and Availability.

    Published:Oct 22, 2026
    Last Modified:Oct 28, 2026
    EPS:Oct 22, 2026
    EPSS Score:0.00483
    CVSS Score:8.8

    Affected Products

    Vendor
    Tianocore
    Product
    Edk2

    Exploits

    https://github.com/RayanZiani/Bootjackhttps://github.com/slabbdev/uefi-pxe-cve-2026-97631https://github.com/Try2Take/CVE-2026-97631-PoC

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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