CVE-2025-66467: cloudstack — Fix

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.

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CVSS v3.1 Score

8.0

HIGH

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

EPSS — Exploit Prediction

0.0001

Probability of exploitation

0.01%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-459 CWE-459

Affected Products

Vendor	Product	Versions
apache	cloudstack	4.19.0.0 — 4.20.3.0
apache	cloudstack	4.21.0.0 — 4.22.0.1

References

Advisories & Patches

https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm

Other References

http://www.openwall.com/lists/oss-security/2026/05/09/4

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. It has a CVSS v3.1 base score of 8.0 (HIGH).

How severe is CVE-2025-66467? +

CVE-2025-66467 has a CVSS v3.1 score of 8.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0001, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2025-66467? +

CVE-2025-66467 affects products from apache, specifically: cloudstack. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-66467? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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