What is CVE-2021-3631?

CVE-2021-3631 is a medium-severity vulnerability in NetApp Ontap Select Deploy Administration Utility, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 6.3/10. Published 2022-03-02.

How severe is CVE-2021-3631?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Is CVE-2021-3631 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in NetApp Ontap Select Deploy Administration Utility

CVE-2021-3631

A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.

Published 2022-03-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (40.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.0% 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

NetApp Ontap Select Deploy Administration Utility
Red Hat Enterprise Linux — versions 8.0
Red Hat Libvirt
Red Hat Openshift Container Platform — versions 4.8
Libvirt — versions Fixed-In - libvirt v7.5.0

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
gitlab.com/libvirt/libvirt/-/issues/153 (Exploit, Third Party Advisory)
gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2 (Patch, Third Party Advisory)
access.redhat.com/errata/RHSA-2021:3631 (Vendor Advisory)
security.netapp.com/advisory/ntap-20220331-0010/ (Third Party Advisory)
security.gentoo.org/glsa/202210-06 (vendor-advisory, Third Party Advisory)
lists.debian.org/debian-lts-announce/2024/04/msg00000.html (mailing-list)

Frequently asked questions

What is CVE-2021-3631?: CVE-2021-3631 is a medium-severity vulnerability in NetApp Ontap Select Deploy Administration Utility, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 6.3/10. Published 2022-03-02.
How severe is CVE-2021-3631?: Medium severity. CVSS v3 base score is 6.3 out of 10.
Is CVE-2021-3631 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.