What is CVE-2020-24716?

CVE-2020-24716 is a high-severity vulnerability in FreeBSD, classified under Incorrect Authorization. CVSS score: 7.8/10. Published 2020-08-27.

How severe is CVE-2020-24716?

High severity. CVSS v3 base score is 7.8 out of 10.

Auth bypass in FreeBSD

CVE-2020-24716

OpenZFS before 2.0.0-rc1, when used on FreeBSD, allows execute permissions for all directories.

Vulnerability class: Broken Access Control

Published 2020-08-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (39.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

jira.ixsystems.com/browse/NAS-107270 (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/openzfs/zfs/commit/716b53d0a14c72bda16c0872565dd1909757e73f (Patch, Third Party Advisory)
reviews.freebsd.org/D26107 (Patch, Third Party Advisory, Issue Tracking)
github.com/openzfs/zfs/compare/zfs-0.8.4...zfs-2.0.0-rc1 (Third Party Advisory, Release Notes)

Frequently asked questions

What is CVE-2020-24716?: CVE-2020-24716 is a high-severity vulnerability in FreeBSD, classified under Incorrect Authorization. CVSS score: 7.8/10. Published 2020-08-27.
How severe is CVE-2020-24716?: High severity. CVSS v3 base score is 7.8 out of 10.