CVE-2021-20295

Name: CVE-2021-20295
Creator: NVD / NIST
Published: 2022-04-01T23:15:08.777+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2021-20295 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. It was discovered that the update for the virt:rhel module in the RHSA-2020:4676 (https://access.redhat.com/errata/RHSA-2020:4676) erratum released as part of Red Hat Enterprise Linux 8.3 failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected in virt:rhel/qemu-kvm via erratum RHSA-2020:4059 (https://access.redhat.com/errata/RHSA-2020:4059). CVE-2021-20295 was assigned to that Red Hat specific security regression. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

It was discovered that the update for the virt:rhel module in the RHSA-2020:4676 (https://access.redhat.com/errata/RHSA-2020:4676) erratum released as part of Red Hat Enterprise Linux 8.3 failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected in virt:rhel/qemu-kvm via erratum RHSA-2020:4059 (https://access.redhat.com/errata/RHSA-2020:4059). CVE-2021-20295 was assigned to that Red Hat specific security regression. For more details about the original security issue CVE-2020-10756, refer to bug 1835986 or the CVE page: https://access.redhat.com/security/cve/CVE-2020-10756.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.28%

19.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Qemu	Qemu	< 4.2.0-34

References

https://access.redhat.com/security/cve/CVE-2020-10756Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1944075Issue Tracking, Vendor Advisory
https://security.netapp.com/advisory/ntap-20220519-0003/Third Party Advisory
https://access.redhat.com/security/cve/CVE-2020-10756Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1944075Issue Tracking, Vendor Advisory
https://security.netapp.com/advisory/ntap-20220519-0003/Third Party Advisory

Timeline

Published: Apr 1, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20295?

How severe is CVE-2021-20295?

CVE-2021-20295 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20295?

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-2021-20295?

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

Scan your code now

Source: NVD / NIST