8.1

CVE-2025-66467: apache software foundation apache cloudstack Incomplete Cleanup

CVSS: 8.1v3.1HighAnalyzed
Published 08-05-2026Last modified 09-05-2026
Open JSON

Vulnerability summary

CVE-2025-66467 is a high (CVSS 8.1) Incomplete Cleanup vulnerability in apache software foundation apache cloudstack. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.6% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
0.37%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 08-05-2026
    PublishedVulnerability first disclosed.
  2. 09-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

0.00 pp

From 0.37% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.37%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apache1 product
  • cloudstack≥ 4.19.0.0, < 4.20.3.0 | ≥ 4.21.0.0, < 4.22.0.1
Apache software foundation1 product

2 vendors · 2 products

References

2 links