CVSS 3.1
7.6 highCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HCVE-2020-25647
High (7.6). EPSS 0.8% chance of exploitation in the next 30 days.
A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
- CWE
- CWE-787
- Published
- Modified
- Record from
- the NVD, synced
Affected
- fedoraproject:fedora
- gnu:grub2
- netapp:ontap_select_deploy_administration_utility
- redhat:enterprise_linux
- redhat:enterprise_linux_server_aus
- redhat:enterprise_linux_server_eus
- redhat:enterprise_linux_server_tus
- redhat:enterprise_linux_workstation
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1886936
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/
- https://security.gentoo.org/glsa/202104-05
- https://security.netapp.com/advisory/ntap-20220325-0001/
- https://bugzilla.redhat.com/show_bug.cgi?id=1886936