VulnerabilityDeferred

CVE-2026-25828

grub-btrfs through 2026-01-31 (on Arch Linux and derivative distributions) allows initramfs OS command injection because it does not sanitize the $root parameter to resolve_device().

MEDIUM 5.4EPSS 1.26%

Does this matter?

Lower severity and a low EPSS score (1.26%). Track it; it rarely justifies an emergency change on its own.

Description

grub-btrfs through 2026-01-31 (on Arch Linux and derivative distributions) allows initramfs OS command injection because it does not sanitize the $root parameter to resolve_device(). NOTE: a third party reports "exploitation may not be feasible under normal conditions and may depend on specific implementation details within resolve_device."

CVSS 3.1: 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS: 1.26% probability · 68th percentile
CISA KEV: Not listed
Weakness: CWE-78
Source: cve@mitre.org

References

https://archlinux.org/packages/extra/any/grub-btrfs/
https://github.com/Antynea/grub-btrfs/tree/master
https://github.com/cardosource/CVE-2026-25828

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.