Detect Array Networks ArrayOS AG OS Command Injection (CVE-2025-66644) in CrowdStrike LogScale
Detects exploitation of CVE-2025-66644, an OS command injection vulnerability in Array Networks ArrayOS AG. This vulnerability allows remote attackers to execute arbitrary operating system commands through the Array Networks SSL VPN/ZTNA gateway. The flaw is tracked by CISA as a Known Exploited Vulnerability (KEV), indicating active in-the-wild exploitation. Attackers may leverage this to gain initial access, establish persistence, or pivot laterally within the network.
MITRE ATT&CK
LogScale Detection Query
#event_simpleName IN (ProcessRollup2, SyntheticProcessRollup2, NetworkConnectIP4)
| ParentBaseFileName IN ("ag", "arrayd", "httpd", "nginx", "java")
OR (event_simpleName = "NetworkConnectIP4" AND RemotePort IN (443, 8443, 4433))
| FileName IN ("wget", "curl", "bash", "sh", "nc", "ncat", "python", "python3", "perl", "ruby", "chmod")
OR CommandLine = ~".*(/tmp/|/dev/shm|whoami|id;|uname|base64|&&|\|\|).*"
| groupby([ComputerName, UserName, FileName, CommandLine, ParentBaseFileName, RemoteIP, RemotePort])
| count() AS event_count
| sort -event_count
| head 100CrowdStrike Falcon CQL query detecting CVE-2025-66644 exploitation by correlating process creation events where suspicious shell utilities are spawned from Array Networks gateway processes or following inbound SSL-VPN connections.
Data Sources
Required Tables
False Positives & Tuning
- Authorized system administrators running shell commands on hosts protected by Array Networks gateways
- Legitimate scripts executed by network operations teams after VPN session establishment
- Automated IT management tools that spawn child processes following VPN authentication
- Security assessment tools performing authorized post-exploitation simulation exercises
Other platforms for CVE-2025-66644
Testing Methodology
Validate this detection against 3 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1Simulate Array Networks OS Command Injection via HTTP Request
Expected signal: Web access log entry on the target appliance showing POST request to /cgi-bin/login with URL-encoded shell metacharacters (';id;') in the username parameter
- Test 2Spawn Reverse Shell from Simulated Compromised Array Gateway Process
Expected signal: Endpoint process telemetry showing bash process with parent matching gateway daemon, network telemetry showing outbound TCP connection to ATTACKER_IP:4444 from the gateway host
- Test 3Download and Execute Payload via Injected wget Command
Expected signal: Process telemetry showing wget execution with external URL argument spawned from a gateway-related parent process; DNS query for ATTACKER_IP hostname; outbound HTTP connection to ATTACKER_IP:8080
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