---
id: "CVE-2025-66644"
kind: "vulnerability"
aliases: ["CVE-2025-66644"]
title: "arraynetworks arrayos ag: Array Networks ArrayOS AG before 9.4.5.9 allows command injection, as exploited in the wild in August through\u2026"
severity: "critical"
cvss: 9.8
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Array Networks ArrayOS AG", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "arraynetworks arrayos ag", "fixed": ["9.4.5.9"], "affected": "< 9.4.5.9", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["array-networks", "arrayos-ag", "exploited", "infrastructure", "self-hosted"]
not_affected_if: ["unknown"]
published_at: "2025-12-05T19:15:53+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T23:44:51+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-66644", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66644", "first_seen_at": "2026-10-23T23:44:51+00:00"}]
---

# arraynetworks arrayos ag: Array Networks ArrayOS AG before 9.4.5.9 allows command injection, as exploited in the wild in August through…

Array Networks ArrayOS AG contains an OS command injection flaw that lets an attacker run arbitrary commands on the appliance. CISA lists it as actively exploited in the wild.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Array Networks ArrayOS AG affected ? fixed ?
- vendor:arraynetworks arrayos ag affected < 9.4.5.9 fixed 9.4.5.9

## Fix

Apply the mitigations from the Array Networks vendor advisory, or discontinue use of the product if mitigations are unavailable (per CISA required action).

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-66644
- 2026-10-23T23:44:51+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-66644

## From the sources

Array Networks ArrayOS AG contains an OS command injection vulnerability that could allow an attacker to execute arbitrary commands.

CISA 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.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_