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Apexward Pulse
Type Vulnerability

Palo Alto Networks · Code execution

Array Networks ArrayOS AG OS Command Injection Vulnerability

1 sourceCVE-2025-66644

At a glance

Medium
7-day window, from the last update
ActiveConfirmed in-the-wild exploitation
Evidence-weighted, not popularity
Signal

Actively exploited in the wild — prioritise confirming exposure.

Why Medium

Medium rather than High: exposure is scored at a default because we cannot see your systems or suppliers. If you run or depend on Palo Alto Networks, treat it as High.

Briefing

  • Do not treat uncorroborated claims as confirmed breaches.

Questions to ask IT

  • Do we run Palo Alto Networks, and is every instance on version 9.4.5.9 or later?
  • Is any of it reachable from the internet?
  • Have we checked whether it has already been used against us?
  • If it is not yet patched, what mitigation is in place, and will the fix be done by 11 Nov?

Next steps

  1. Confirm exposure, mitigation status and any service interruption risk.

Summary

  • Array Networks ArrayOS AG contains an OS command injection vulnerability that could allow an attacker to execute arbitrary commands.
  • CVE-2025-66644 is listed in known-exploited catalogue (exploitation in the wild)
  • Authoritative catalogues report active exploitation of this vulnerability.

Why this matters in the UK

  • Known-exploited catalogue reports exploitation in the wild

Products and services involved

15 reports

Part of Multiple OS command injection vulnerabilities disclosed

All 15 reports in this story

Pulse

Last checked 4d ago · Recheck overdue since 5 Nov 2026, 22:35 UK time · 3 quiet checks collapsed

Signal
4 Nov 2026, 22:35 UK time · 4d ago

in the next 30 days first recorded at 3.4% (lower likelihood signal, not confirmed exploitation). Suggested changed to 7d.

recorded — watch for changes; not confirmed exploitation.

EscalationDe-escalationCritical / liveWhat these mean
Drag to pan · Ctrl / ⌘ + scroll or pinch to zoom6 events

2 quiet checks hidden.

Sources

How we know

Statements extracted from sources. Higher confidence means stronger corroboration.

  • ConfirmedHeadline90% confidence

    Array Networks ArrayOS AG OS Command Injection Vulnerability

  • ConfirmedSummary fact75% confidence

    Array Networks ArrayOS AG contains an OS command injection vulnerability that could allow an attacker to execute arbitrary commands. Affects Array Networks ArrayOS AG. Known ransomware campaign use: Unknown. 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.

  • ConfirmedCVE identifier95% confidence

    Event involves CVE-2025-66644

  • ConfirmedKnown-exploited catalogue98% confidence

    CVE-2025-66644 is listed in known-exploited catalogue (exploitation in the wild)