Vulnerability Snapshot
This advisory is rated CRITICAL — exploitation is trivial or already observed in the wild and impact is severe. Patch immediately, not on the next maintenance window.
Affected technology: FortiOS.
Executive Summary
CVSSv3 Score: 6.0 An Internal Asset Exposed to Unsafe Debug Access Level or State vulnerability [CWE-1244] in FortiOS and FortiProxy may allow an authenticated admin to execute lua scripts via crafted CLI commands. Revised on 2026-06-09 00:00:00 ]]>
Source
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Affected Products
Sources
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Frequently Asked Questions
What is "Restricted CLI escape using Lua"?
This is a critical-severity vendor advisory from Fortinet PSIRT Advisories. It covers FortiOS and was flagged for security teams to evaluate.
Am I affected?
Check whether your environment runs FortiOS. If you operate any of those, treat yourself as in scope until you have evidence otherwise. A Vulnios scan will identify the exact assets carrying the affected version.
How urgent is the response?
Critical: do not wait for your normal patch cycle. Verify exposure today, apply the vendor patch immediately, and add detection rules for any post-exploit indicators.
How do I remediate?
Apply the vendor patch listed in the upstream advisory linked under Sources. If the patch is not yet available, follow the vendor-supplied workaround (often a config flag or feature disable) and add detections for the published exploit pattern in your SIEM. Re-scan after the patch lands to confirm the finding clears.
How does Vulnios help with this?
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