Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-3948

22
FAUCET Score

CVE-2021-3948 describes an incorrect default permissions vulnerability in the mig-controller, affecting Konveyor and Red Hat Enterprise Linux migration tools. This flaw allows an authenticated attacker to migrate malicious workloads to target clusters, potentially compromising the confidentiality, integrity, and availability of services. Rated 6.3 MEDIUM, the vulnerability has a low attack complexity and requires low privileges for exploitation. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.5.2CPE matchmatch criteria
cpe:2.3:a:konveyor:mig-controller:*:*:*:*:*:*:*:*
>= 1.6.0, < 1.6.3CPE matchmatch criteria
cpe:2.3:a:konveyor:mig-controller:*:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:redhat:migration_toolkit:1.0:*:*:*:*:*:*:*
1.5CPE matchmatch criteria
cpe:2.3:a:redhat:migration_toolkit:1.5:*:*:*:*:containers:*:*
1.6CPE matchmatch criteria
cpe:2.3:a:redhat:migration_toolkit:1.6:*:*:*:*:containers:*:*

CVSS Data

CVSS version used by this source: 3.1

6.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 54th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.5Fixed in: rhmtc/openshift-migration-controller-rhel8:v1.5.2-6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Migration Toolkit for Containers 1.6Fixed in: rhmtc/openshift-migration-controller-rhel8:v1.6.3-8
View patch

Vendor Advisories (1)

redhatCVE-2021-3948Moderate

mig-controller: incorrect namespaces handling may lead to not authorized usage of Migration Toolkit for Containers (MTC)

Nov 10, 2021

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory