CVE•Published 2026-05-08•Modified 2026-05-10•1 article on news•6 live references•NVD data

CVE-2026-25077Apache · Cloudstack

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

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Weaknesses (CWE)

CWE-94Improper Control of Generation of Code ('Code Injection')

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.

Timeline

Published 2026-05-08

Modified 2026-05-10

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-25077

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Apache Cloudstack"

All exposed Apache Cloudstack instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Cloudstack"

HTTP body or banner mentions "Cloudstack" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-25077