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Vulnerability record · CVE-2020-24718 · published 25 September 2020

CVE-2020-24718: Freebsd missing authorization vulnerability

Freebsd · Freebsd

bhyve, as used in FreeBSD through 12.1 and illumos (e.g., OmniOS CE through r151034 and OpenIndiana through Hipster 2020.04), does not properly restrict VMCS and VMCB read/write operations, as demonstrated by a root user in a container on an Intel system, who can gain privileges by modifying VMCS_HOST_RIP.

8.2 CVSS 3.1 High EPSS 0.60% · top 52.9% CWE-862 · Missing authorization
8.2CVSS 3.1 base score, v2 7.2
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

bhyve, as used in FreeBSD through 12.1 and illumos (e.g., OmniOS CE through r151034 and OpenIndiana through Hipster 2020.04), does not properly restrict VMCS and VMCB read/write operations, as demonstrated by a root user in a container on an Intel system, who can gain privileges by modifying VMCS_HOST_RIP.

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

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/illumos/illumos-gate/blob/84971882a96ac0fecd538b02208054a872ff8af3/usr/src/uts/i86pc/io/vmm/intel/vmc ExploitThird Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:28.bhyve_vmcs.asc Vendor Advisory
https://security.netapp.com/advisory/ntap-20201016-0002/ Third Party Advisory
https://github.com/illumos/illumos-gate/blob/84971882a96ac0fecd538b02208054a872ff8af3/usr/src/uts/i86pc/io/vmm/intel/vmc ExploitThird Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:28.bhyve_vmcs.asc Vendor Advisory
https://security.netapp.com/advisory/ntap-20201016-0002/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-24718), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.