How severe is CVE-2021-3703?

CVE-2021-3703 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-3703 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-3703?

CVE-2021-3703 affects Redhat Openshift Serverless. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-3703?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-3703 published?

CVE-2021-3703 was published on 2022-08-26 and last updated on 2026-06-17.

CVE-2021-3703

CVE-2021-3703 is a high-severity vulnerability in Redhat Openshift Serverless with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Redhat Openshift Serverless
Published: 2022-08-26
Last modified: 2026-06-17

Description

It was found that the CVE-2021-27918, CVE-2021-31525 and CVE-2021-33196 have been incorrectly mentioned as fixed in RHSA for Serverless 1.16.0 and Serverless client kn 1.16.0. These have been fixed with Serverless 1.17.0.

Frequently asked questions

What is CVE-2021-3703?: It was found that the CVE-2021-27918, CVE-2021-31525 and CVE-2021-33196 have been incorrectly mentioned as fixed in RHSA for Serverless 1.16.0 and Serverless client kn 1.16.0. These have been fixed with Serverless 1.17.0.
How severe is CVE-2021-3703?: CVE-2021-3703 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-3703 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3703?: CVE-2021-3703 affects Redhat Openshift Serverless. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3703?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-3703 published?: CVE-2021-3703 was published on 2022-08-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redhat:openshift_serverless:*:*:*:*:*:*:*:*

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