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    1 vulnerability by Finland Matriculation Board

    CVE-2026-8863 (GCVE-0-2026-8863)

    Vulnerability from cvelistv5 – Published: 2026-06-09 18:10 – Updated: 2026-06-10 15:16
    VLAI
    Title
    CVE-2026-8863
    Summary
    Multiple Microsoft-sigend UEFI SHIM bootloaders are vulnerable to SecureBoot bypass. An attacker with administrative privileges or the ability to modify the boot process could use one of the vulnerable shim bootloaders to bypass Secure Boot protections and execute arbitrary code before the operating system loads. Specific UEFI DBX update is required to block these vulnerable boot loaders.
    Severity
    7.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-347 - Improper Verification of Cryptographic Signature
    • CWE-354 - Improper Validation of Integrity Check Value
    Assigner
    References
    Impacted products
    Credits
    Thanks to Martin Smolar of ESET for discovering and reporting this vulnerability
    Show details on NVD website
    To clipboard 

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