CVE-2025-69233
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
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 can exceed allocation limits configured for their accounts/domains. This can be used to degrade infrastructure resources and lead to denial of service. Users are recommended to upgrade to Apache CloudStack versions 4.20.3.0 or 4.22.0.1, or later.
Risk Assessment
An attacker could exploit this to overload infrastructure, leading to service unavailability and disruption of operations.
Recommendation
Upgrade Apache CloudStack to version 4.20.3.0 or 4.22.0.1 or later as soon as possible.
Other vulnerabilities in Apache CloudStack
See all- CVE-2026-25077High
Account users are allowed by default to register templates to be downloaded directly to the primary storage for deploying instances using the KVM hypervisor. Due to missing file name sanitization, an attacker can register malicious templates to execute arbitrary code on the KVM hosts.
- CVE-2026-62440Critical
Improper Access Control vulnerability in Apache CloudStack's Kubernetes Service (CKS) plugin, allowing cross-tenant manipulation of the Kubernetes cluster while adding and removing nodes. Affects versions from 4.21.0.0 through 4.22.1.0.
- CVE-2026-61398Critical
Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Instance Reset Password functionality. Affects versions from 4.15.1.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
- CVE-2026-59085Critical
Server-Side Request Forgery (SSRF) vulnerability in Apache CloudStack's webhook module, exploitable via webhook delivery requests. Affects versions from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
- CVE-2026-25199Critical
The Proxmox extension for Apache CloudStack allows unauthorized access to instances belonging to other tenants. The issue arises from improper use of an instance setting, enabling attackers to modify and gain control over virtual machines of other users.
- CVE-2015-3252Critical
Apache CloudStack before version 4.5.2 does not properly preserve VNC passwords when migrating KVM virtual machines, allowing remote attackers to gain access by connecting to the VNC server.
- CVE-2026-59654High
Apache CloudStack versions 4.7.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0 have a missing release of resource after effective lifetime vulnerability in the scoped global configuration functionality. This may lead to denial of service (DoS) for the management server.
- CVE-2026-68745High
Certificate validation failures in SAML authentication in Apache CloudStack 4.20.3.0 and 4.22.1.0 allow a malicious agent to forge a SAML response to the management server. The agent must spoof the IdP IP address or register a URL of its own choosing, after which it can allow logging on with forged signatures. Users are recommended to upgrade to versions 4.20.3.1 or 4.22.1.1 and above.
- CVE-2026-66797Medium
Improper access control in CloudStack's annotation functionality allows unauthorized comment creation and disclosure. The addAnnotation and listAnnotation APIs perform an ownership check but fail to honor its result correctly, allowing any authenticated user to write and read annotations on entities they don't own. Affects versions from 4.15.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
- CVE-2026-66722High
Improper authorization for CRUD operations on Project Roles and Project Role permissions for domain admins in CloudStack. A Domain Admin can create, update, delete, and list project roles and permissions for projects in any domain, not just their own. Affects versions from 4.15.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

