CVE-2026-25828 Command injection in n/a
An attacker can execute arbitrary commands via unsanitized input in grub-btrfs, potentially compromising the system during initramfs execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-25828?
CVE-2026-25828 is a medium-severity command injection vulnerability in n/a, published on 12 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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."
Weakness: CWE-78
Which versions are affected by CVE-2026-25828?
How do I fix CVE-2026-25828?
No fix has been published for CVE-2026-25828 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-25828 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-25828 exists.
Sources
Also known as GHSA-2fcc-cgw7-6rrw.