CVE-2025-66644

Array Networks ArrayOS AG

Published 5 Dec 2025 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 8 Dec 2025, with a remediation deadline of 29 Dec 2025 for US federal agencies.

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.

Description

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

References

www.bleepingcomputer.com/news/security/hackers-are-exploiting-arrayos-ag-vpn-flaw-to-plant-webshells/ · Press/Media Coverage
www.jpcert.or.jp/at/2025/at250024.html · Third Party Advisory
x.com/ArraySupport/status/1921373397533032590 · Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-66644 · US Government Resource