How severe is CVE-2021-4178?

CVE-2021-4178 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-4178 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4178?

CVE-2021-4178 primarily affects Redhat Fabric8-kubernetes. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-4178?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-4178 published?

CVE-2021-4178 was published on 2022-08-24 and last updated on 2026-06-17.

CVE-2021-4178

CVE-2021-4178 is a medium-severity vulnerability in Redhat Fabric8-kubernetes with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Redhat Fabric8-kubernetes
Published: 2022-08-24
Last modified: 2026-06-17

Description

A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.

Frequently asked questions

What is CVE-2021-4178?: A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.
How severe is CVE-2021-4178?: CVE-2021-4178 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-4178 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4178?: CVE-2021-4178 primarily affects Redhat Fabric8-kubernetes. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-4178?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-4178 published?: CVE-2021-4178 was published on 2022-08-24 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:a:redhat:fabric8-kubernetes:*:*:*:*:*:*:*:*
cpe:2.3:a:redhat:fabric8-kubernetes:5.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:redhat:fabric8-kubernetes:5.8.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:a-mq_streams:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:redhat:build_of_quarkus:2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:redhat:descision_manager:7.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:fuse:7.11:*:*:*:*:*:*:*
cpe:2.3:a:redhat:integration_camel_k:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:integration_camel_quarkus:2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_application_runtimes:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:process_automation:7.0:*:*:*:*:*:*:*

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