6.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
15.5%
A flaw was found in GRUB2. GRUB2 do not call the module fini functions on exit, leading to Debian/Ubuntu’s peimage GRUB2 module leaving the UEFI system table hooks after exit. This issue leads to a use-after-free condition, possibly leading to a secure boot bypass.