CISA KEV · Known exploitedCritical

CVE-2025-66644

Array Networks ArrayOS AG

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

CVSS
9.8
EPSS
3.46%
87.9% percentile
CISA KEV
Listed
Published
2025.12.06
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability3.46%
Technical severityCVSS 9.8

Vulnerability overview

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

Affected product and versions

Product
Array Networks ArrayOS AG
Affected versions
< 9.4.5.9
Fixed versions
9.4.5.9

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
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.

Due date: 2025.12.29
  1. 1
    Identify

    Confirm that Array Networks ArrayOS AG and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-78
KEV added
2025.12.08
Ransomware use
미확인
CVE-2025-66644 — Array Networks ArrayOS AG | SECUFOCUS NOW