vulnerability
Red Hat: CVE-2020-15705: CVE-2020-15705 grub2: Fail kernel validation without shim protocol (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:M/Au:N/C:P/I:P/A:P) | Jul 29, 2020 | Jul 30, 2020 | Mar 27, 2026 |
Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
Jul 29, 2020
Added
Jul 30, 2020
Modified
Mar 27, 2026
Description
GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions.
Solutions
redhat-upgrade-fwupdredhat-upgrade-fwupd-debuginforedhat-upgrade-fwupd-debugsourceredhat-upgrade-fwupdateredhat-upgrade-fwupdate-debuginforedhat-upgrade-fwupdate-develredhat-upgrade-fwupdate-efiredhat-upgrade-fwupdate-libsredhat-upgrade-grub2redhat-upgrade-grub2-commonredhat-upgrade-grub2-debuginforedhat-upgrade-grub2-debugsourceredhat-upgrade-grub2-efi-aa64-modulesredhat-upgrade-grub2-efi-ia32redhat-upgrade-grub2-efi-ia32-cdbootredhat-upgrade-grub2-efi-ia32-modulesredhat-upgrade-grub2-efi-x64redhat-upgrade-grub2-efi-x64-cdbootredhat-upgrade-grub2-efi-x64-modulesredhat-upgrade-grub2-pcredhat-upgrade-grub2-pc-modulesredhat-upgrade-grub2-ppc-modulesredhat-upgrade-grub2-ppc64-modulesredhat-upgrade-grub2-ppc64le-modulesredhat-upgrade-grub2-toolsredhat-upgrade-grub2-tools-debuginforedhat-upgrade-grub2-tools-efiredhat-upgrade-grub2-tools-efi-debuginforedhat-upgrade-grub2-tools-extraredhat-upgrade-grub2-tools-extra-debuginforedhat-upgrade-grub2-tools-minimalredhat-upgrade-grub2-tools-minimal-debuginforedhat-upgrade-mokutilredhat-upgrade-mokutil-debuginforedhat-upgrade-shim-ia32redhat-upgrade-shim-unsigned-aa64-debuginforedhat-upgrade-shim-unsigned-ia32redhat-upgrade-shim-unsigned-ia32-debuginforedhat-upgrade-shim-unsigned-x64redhat-upgrade-shim-unsigned-x64-debuginforedhat-upgrade-shim-x64
Rapid7 Labs
2026 Global Threat Landscape Report
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