CVE record · CVE-2026-49431

Incorrect user validation in ZFS_IOC_SET_PROP ioctl

CVSS 3.3 LowEPSS 0.0012 · 1st percentile

Published by the CVE Program (CNA: freebsd) at 19 Aug 2026, 05:15 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
FreeBSD	FreeBSD	affected 15.1-RELEASE to before p1 release affected 15.0-RELEASE to before p11 release affected 14.4-RELEASE to before p7 release affected 14.3-RELEASE to before p16 release Other versions: unknown

Identifiers: CVE-2026-49431
CNA: freebsd
Weakness (CWE): CWE-863
Tags: FreeBSD
Broken access control
Published: 19 Aug 2026
Updated: 26 Aug 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
3.3	Low	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N	ADP (CISA-ADP)

CISA KEV Not listed.
EPSS 0.0012, the 1st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 19 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

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

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.