CRITICAL CISA KEV

CVE-2025-66644

CVSS v3

9.8

CRITICAL

EPSS Score

3.1%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

SSVC status

Description

Array Networks ArrayOS AG before 9.4.5.9 allows command injection, as exploited in the wild in August through December 2025.

CISA Known Exploited Vulnerability

Date Added
12/8/2025
Patch Due Date
12/29/2025
Ransomware Use
Unknown

Technical details

Published
12/5/2025

Frequently asked questions

What is CVE-2025-66644?

Array Networks ArrayOS AG before 9.4.5.9 allows command injection, as exploited in the wild in August through December 2025.

Is CVE-2025-66644 actively exploited?

Yes. CVE-2025-66644 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 12/29/2025.

What is the CVSS score for CVE-2025-66644?

CVE-2025-66644 has a CVSS v3 base score of 9.8 (CRITICAL severity).

Is CVE-2025-66644 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.