CVE-2021-3948

Name: CVE-2021-3948
Creator: NVD / NIST
Published: 2022-02-18T18:15:09.833+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2021-3948 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. An incorrect default permissions vulnerability was found in the mig-controller. Due to an incorrect cluster namespaces handling an attacker may be able to migrate a malicious workload to the target cluster, impacting confidentiality, integrity, and availability of the services located on that cluster.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

An incorrect default permissions vulnerability was found in the mig-controller. Due to an incorrect cluster namespaces handling an attacker may be able to migrate a malicious workload to the target cluster, impacting confidentiality, integrity, and availability of the services located on that cluster.

Metrics

CVSS 3.1

6.3/10

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

EPSS Probability

0.56%

42.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Konveyor	Mig-Controller	< 1.5.2
Konveyor	Mig-Controller	>= 1.6.0, < 1.6.3
Redhat	Migration Toolkit	1.0
Redhat	Migration Toolkit	1.5
Redhat	Migration Toolkit	1.6

References

https://bugzilla.redhat.com/show_bug.cgi?id=2022017Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2022017Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Feb 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3948?

How severe is CVE-2021-3948?

CVE-2021-3948 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3948?

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-2021-3948?

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

Scan your code now

Source: NVD / NIST