CVE-2025-66644
Array Networks — Array Networks ArrayOS AG OS Command Injection Vulnerability
Array Networks · CWE-78 — Operating system command injection · in CISA KEV since 2025-12-08
EVRS 75 of 100 Urgent
Patch This Cycle
Rank 1,173 of 2,960 tracked
Raised to the floor for a confirmed exploited vulnerability.
Why it scores 75
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.034.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
arrayos ag: update to 9.4.5.9 or later
Affected versions
- arrayos ag
< 9.4.5.9 - ag1000
- ag1000t
- ag1000v5
- ag1100
- ag1100v5
- ag1150
- ag1200
+7 more affected products; see the full list at NVD.
Remediation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 9.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.034 (88.8th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2025-12-29 · CISA federal deadline · Overdue by 10 months | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | None known | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 7.2 (v3.1), assigned by mitre. | Listed | ENISA EUVD |
Description
NVDArray Networks ArrayOS AG before 9.4.5.9 allows command injection, as exploited in the wild in August through December 2025.
What CISA says to do