CVE-2025-66644

HIGH7.2

CISA KEV

Published 2025-12-05 · Updated 2026-06-17 · Source cve@mitre.org

Summary

CVE-2025-66644 is a high-severity (CVSS 7.2) vulnerability in Array Networks ArrayOS AG. CISA added it to the Known Exploited Vulnerabilities catalog on December 8, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by December 29, 2025. CISA does not currently list it as used in ransomware campaigns. Array Networks has 2 vulnerabilities in the KEV catalog, 1 of them linked to ransomware.

All 2 known-exploited Array Networks vulnerabilities →

Description

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

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

CWE-78

CISA Known-Exploited Vulnerability

Product: Array Networks — ArrayOS AG

Name: Array Networks ArrayOS AG OS Command Injection Vulnerability

Date added: 2025-12-08 · Due: 2025-12-29

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

View on NVD

More exploited Array Networks vulnerabilities

Most recently added to CISA KEV

CVE-2023-28461
RANSOMWARE
AG/vxAG ArrayOS — Array Networks AG and vxAG ArrayOS Missing Authentication for Critical Function Vulnerability
added 2024-11-25

View all →

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