Is CVE-2026-25077 actively exploited?

No active exploitation of CVE-2026-25077 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-25077 be exploited remotely?

Yes. CVE-2026-25077 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-25077?

CVE-2026-25077 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2026-25077

CWE-94Published: May 8, 2026· Updated: May 10, 2026

8.8

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-25077 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.