CVE-2020-24717

Name: CVE-2020-24717
Creator: NVD / NIST
Published: 2020-08-27T19:15:12.037+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2020-24717 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. OpenZFS before 2.0.0-rc1, when used on FreeBSD, misinterprets group permissions as user permissions, as demonstrated by mode 0770 being equivalent to mode 0777.. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

OpenZFS before 2.0.0-rc1, when used on FreeBSD, misinterprets group permissions as user permissions, as demonstrated by mode 0770 being equivalent to mode 0777.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.46%

36.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

Affected Software

Vendor	Product	Versions
Openzfs	Openzfs	<= 0.8.4

References

https://github.com/openzfs/zfs/commit/716b53d0a14c72bda16c0872565dd1909757e73fPatch, Third Party Advisory
https://github.com/openzfs/zfs/compare/zfs-0.8.4...zfs-2.0.0-rc1Patch, Third Party Advisory
https://jira.ixsystems.com/browse/NAS-107270Exploit, Issue Tracking, Patch, Third Party Advisory
https://reviews.freebsd.org/D26107Issue Tracking, Patch, Third Party Advisory
https://github.com/openzfs/zfs/commit/716b53d0a14c72bda16c0872565dd1909757e73fPatch, Third Party Advisory
https://github.com/openzfs/zfs/compare/zfs-0.8.4...zfs-2.0.0-rc1Patch, Third Party Advisory
https://jira.ixsystems.com/browse/NAS-107270Exploit, Issue Tracking, Patch, Third Party Advisory
https://reviews.freebsd.org/D26107Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Aug 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-24717?

OpenZFS before 2.0.0-rc1, when used on FreeBSD, misinterprets group permissions as user permissions, as demonstrated by mode 0770 being equivalent to mode 0777.

How severe is CVE-2020-24717?

CVE-2020-24717 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24717?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-24717?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST