CVE-2025-66644

Array Networks ArrayOS AG OS Command Injection Vulnerability

Exploited in attacks High 7.2 Attack chance: 3.4%

What it is

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

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

What to do

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

Deadline for US federal agencies: December 29, 2025

Added to the CISA list: December 8, 2025
Published: December 5, 2025
Severity: High 7.2 CVSS 3.1
Chance of attacks in the next 30 days (EPSS): 3.4% in the top 11.2% of all known vulnerabilities
Weakness: CWE-78
More details: NVD · CVE.org · CISA

All references (3)

More exploited flaws from Array Networks

Added	Vulnerability	Product	Severity	Attack chance
Nov 25, 2024	Array Networks AG and vxAG ArrayOS Missing Authentication for Critical FunctionCVE-2023-28461used by ransomware	AG/vxAG ArrayOS	Critical 9.8	68%

All of them →

Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.