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Known vulnerabilities in GNU GRUB2

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CVE Summary Score Published
CVE-2026-97876 A local attacker with control over GRUB's configuration can bypass lockdown restrictions when booting with Secure Boot… 6.4 Medium Oct 2, 2026
CVE-2025-54770 Grub2: use-after-free in net_set_vlan 4.9 Medium Nov 18, 2025
CVE-2025-61664 Grub2: missing unregister call for normal_exit command may lead to use-after-free 4.9 Medium Nov 18, 2025
CVE-2025-61663 Grub2: missing unregister call for normal commands may lead to use-after-free 4.9 Medium Nov 18, 2025
CVE-2025-61662 A Use-After-Free vulnerability has been discovered in GRUB's gettext module 7.8 High Nov 18, 2025
CVE-2025-61661 Grub2: grub2: out-of-bounds write via malicious usb device 4.8 Medium Nov 18, 2025
CVE-2025-54771 Grub2: use-after-free in grub_file_close() 4.9 Medium Nov 18, 2025
CVE-2024-56738 GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows… 5.3 Medium Dec 29, 2024
CVE-2024-56737 GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS… 8.8 High Dec 29, 2024
CVE-2024-2312 GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI… 6.7 Medium Apr 5, 2024

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