How severe is CVE-2025-66644?

CVE-2025-66644 has a CVSS 3.1 base score of 7.2 (HIGH). EPSS estimates a 3.4% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2025-66644: Array Networks ArrayOS AG OS Command Injection

CISA Known Exploited Vulnerabilities

Array Networks ArrayOS AG OS Command Injection Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2025-12-08

Remediation 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.

CISA notes
https://support.arraynetworks.net/prx/001/http/supportportal.arraynetworks.net/ag.html ; https://www.jpcert.or.jp/at/2025/at250024.html ; https://nvd.nist.gov/vuln/detail/CVE-2025-66644

Description

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

Severity

CVSS 3.1 · CNA7.2 HIGH

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

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
Array Networks	ArrayOS AG	0 to <9.4.5.9

References

3 Links

Other references

Record Details

Published

2025-12-05

Last updated

2026-02-26

Assigner (CNA)

mitre

Credited to

Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-78 · OS Command Injection

Application Security Tools Penetration Testing Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.