CVE-2026-25828

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-12 · updated 2026-06-17
Weakness: CWE-78

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."

References

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

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