CVE-2026-25077
HIGH
MEDIUM
Priority: 0.06
BB Relevance:
68/100
Published: 2026-05-08
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
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. This can result in the compromise of resource integrity and confidentiality, data loss, denial of service, and availability of the KVM-based infrastructure managed by CloudStack. Users are recommended to upgrade to Apache CloudStack versions 4.20.3.0 or 4.22.0.1, or later, which fixes this issue.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| apache | cloudstack | 4.11.0.0 – 4.20.3.0 |
| apache | cloudstack | 4.21.0.0 – 4.22.0.1 |
References & Advisories (2)
Mailing List
Vendor Advisory