CVE-2026-8863 (GCVE-0-2026-8863)
Vulnerability from cvelistv5
Published
2026-06-09 18:10
Modified
2026-06-10 15:16
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
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.
References
Impacted products
Vendor Product Version
Oracle Corporation OracleLinux(7.2) shim Version: 0.9
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