CVE-2025-69233: Apache CloudStack: Domain/account resources limits not honored

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-08 · updated 2026-10-07
Weakness: CWE-367

Description

Due to multiple time-of-check time-of-use race conditions in the resource count check and increment logic, as well as missing validations, users of the platform are able to exceed the allocation limits configured for their accounts/domains. This can be used by an attacker to degrade the infrastructure's resources and lead to denial of service conditions. Users are recommended to upgrade to Apache CloudStack versions 4.20.3.0 or 4.22.0.1, or later, which fixes this issue.

Affected products

Apache Software Foundation Apache CloudStack: from 4.0.0 before 4.20.3.0; from 4.21.0.0 before 4.22.0.1 — fixed in 4.20.3.0, 4.22.0.1

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache CloudStack 4.20.3.0, 4.22.0.1. Check the vendor advisory for mitigations.

References

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