CVE-2026-49431

3.3 lowEPSS 0.1%

Low (3.3) in freebsd freebsd. EPSS 0.1% chance of exploitation in the next 30 days.

The ZFS_IOC_SET_PROP ioctl, used by zfs-set(8), incorrectly validated the calling user such that an unprivileged user is able to set metadata on a dataset indicating that the dataset has received properties from a zfs-recv(8) stream. Any local user can set the internal ZFS metadata flag "$hasrecvd" on datasets via ZFS_IOC_SET_PROP.

Severity

CVSS 3.1

3.3 low

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-31)
CWE: CWE-863
Published: 2026-08-19
Modified: 2026-09-01
Record from: the NVD, synced 2026-10-19

Affected

freebsd:freebsd

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:40.zfs.asc

Check your stack JSON