CVE-2026-8664
MEDIUMOS Command Injection vulnerability in Rapid7 InsightConnect Finger Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the user or host parameters due…
Description
OS Command Injection vulnerability in Rapid7 InsightConnect Finger Plugin on Linux allows authenticated attackers to execute arbitrary OS commands via the user or host parameters due to insufficient input validation in shell command construction.
Affected Products
insightconnect fingerrapid7Detection & mitigation playbook
Vendor / applianceDetect
Inventory every rapid7 insightconnect finger deployment and check each version against the affected-products list above. Because the exploit targets the running system rather than your application code, also watch for remote code execution at the network and runtime layer — O3 flags the exploit behaviour from runtime telemetry and egress traffic even before a vulnerable build is confirmed.
Fix
Apply the rapid7 insightconnect finger security patch or hotfix for CVE-2026-8664 on the affected version, following the vendor advisory for your exact build.
Workarounds
Cut exposure now: restrict the management/admin interface to trusted networks, segment the device, and apply the vendor's recommended configuration mitigations and any WAF/IPS signature. O3's runtime protection blocks the exploit chain at execution, holding the line on unpatched or end-of-life systems until you can patch.
How O3 protects you
O3 detects and blocks CVE-2026-8664 exploitation at runtime: eBPF exploit-chain detection, plus L7 egress monitoring that catches the post-exploitation callback and severs the attacker's outbound channel.
Tailored to CVE-2026-8664. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-8664 being exploited in your environment?
O3's eBPF runtime sensors and L7 egress monitoring detect and block the CVE-2026-8664 exploit chain at execution — protecting unpatched and end-of-life systems until the vendor patch is applied.