How severe is CVE-2025-66623?

CVE-2025-66623 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-66623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66623?

CVE-2025-66623 affects Linuxfoundation Strimzi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66623?

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.

Does CVE-2025-66623 have an EU (EUVD) identifier?

Yes. CVE-2025-66623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201497.

When was CVE-2025-66623 published?

CVE-2025-66623 was published on 2025-12-05 and last updated on 2026-06-17.

CVE-2025-66623

CVE-2025-66623 is a high-severity vulnerability in Linuxfoundation Strimzi with a CVSS 3.x base score of 7.4. 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201497
Weakness: CWE-200
Affected product: Linuxfoundation Strimzi
Published: 2025-12-05
Last modified: 2026-06-17

Description

Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. From 0.47.0 and prior to 0.49.1, in some situations, Strimzi creates an incorrect Kubernetes Role which grants the Apache Kafka Connect and Apache Kafka MirrorMaker 2 operands the GET access to all Kubernetes Secrets that exist in the given Kubernetes namespace. The issue is fixed in Strimzi 0.49.1.

Frequently asked questions

What is CVE-2025-66623?: Strimzi provides a way to run an Apache Kafka cluster on Kubernetes or OpenShift in various deployment configurations. From 0.47.0 and prior to 0.49.1, in some situations, Strimzi creates an incorrect Kubernetes Role which grants the Apache Kafka Connect and Apache Kafka MirrorMaker 2 operands the GET access to all Kubernetes Secrets that exist in the given Kubernetes namespace. The issue is fixed in Strimzi 0.49.1.
How severe is CVE-2025-66623?: CVE-2025-66623 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-66623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66623?: CVE-2025-66623 affects Linuxfoundation Strimzi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66623?: 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.
Does CVE-2025-66623 have an EU (EUVD) identifier?: Yes. CVE-2025-66623 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201497.
When was CVE-2025-66623 published?: CVE-2025-66623 was published on 2025-12-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:linuxfoundation:strimzi:*:*:*:*:*:*:*:*

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