CVE-2021-20225
MEDIUM6.7EPSS 0.10%Published: 3/3/2021Modified: 4/28/2026
Description
A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Affected packages (2)
- Alpine/grubfrom 0, < 2.06-r0
- Debian/grub2from 0, < 2.04-16
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |