CVE-2020-25647
7.6
HIGH
CVSS 3.1
EPSS 0.01%
Description
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.
How to fix CVE-2020-25647
To remediate CVE-2020-25647, upgrade the affected package to a fixed version below.
- —upgrade to 2.06-r0 or later
- —upgrade to 2.04-16 or later
Is CVE-2020-25647 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.06-r0
- from 0, < 2.04-16
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |