How severe is CVE-2025-66467?

CVE-2025-66467 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-66467 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66467?

CVE-2025-66467 affects Apache Cloudstack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-66467?

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-2025-66467 have an EU (EUVD) identifier?

Yes. CVE-2025-66467 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209743.

When was CVE-2025-66467 published?

CVE-2025-66467 was published on 2026-05-08 and last updated on 2026-06-17.

CVE-2025-66467

CVE-2025-66467 is a high-severity vulnerability in Apache Cloudstack with a CVSS 3.x base score of 8.0. 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-459.

Key facts

Severity: High (CVSS 3.x base score 8.0)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209743
Weakness: CWE-459
Affected product: Apache Cloudstack
Published: 2026-05-08
Last modified: 2026-06-17

Description

Missing MinIO policy cleanup on bucket deletion via Apache CloudStack allows users to retain access to buckets which they previously owned. If another user creates a new bucket with the same name, the previous owners can gain unauthorized read and write access to it by using the previously generated access and secret keys. Users are recommended to upgrade to Apache CloudStack versions 4.20.3.0 or 4.22.0.1, or later, which fixes this issue.

Frequently asked questions

What is CVE-2025-66467?: Missing MinIO policy cleanup on bucket deletion via Apache CloudStack allows users to retain access to buckets which they previously owned. If another user creates a new bucket with the same name, the previous owners can gain unauthorized read and write access to it by using the previously generated access and secret keys. Users are recommended to upgrade to Apache CloudStack versions 4.20.3.0 or 4.22.0.1, or later, which fixes this issue.
How severe is CVE-2025-66467?: CVE-2025-66467 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-66467 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66467?: CVE-2025-66467 affects Apache Cloudstack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-66467?: 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-2025-66467 have an EU (EUVD) identifier?: Yes. CVE-2025-66467 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209743.
When was CVE-2025-66467 published?: CVE-2025-66467 was published on 2026-05-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:*

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