CVE-2018-9194

Name: CVE-2018-9194
Creator: NVD / NIST
Published: 2018-09-05T13:29:00.637+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.13%

Last modified Jun 17, 2026

CVE-2018-9194 is a vulnerability of currently unknown severity. 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 VIP SSL feature when CPx being used.. EPSS estimates a 1.13% chance of exploitation in the next 30 days.

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 VIP SSL feature when CPx being used.

Metrics

EPSS Probability

1.13%

62.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-203

Affected Software

Vendor	Product	Versions
Fortinet	Fortios	>= 5.4.6, <= 5.4.9
Fortinet	Fortios	6.0.0
Fortinet	Fortios	6.0.1

References

https://fortiguard.com/advisory/FG-IR-17-302Vendor Advisory
https://robotattack.org/Third Party Advisory
https://www.kb.cert.org/vuls/id/144389Third Party Advisory, US Government Resource
https://fortiguard.com/advisory/FG-IR-17-302Vendor Advisory
https://robotattack.org/Third Party Advisory
https://www.kb.cert.org/vuls/id/144389Third Party Advisory, US Government Resource

Timeline

Published: Sep 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-9194?

How severe is CVE-2018-9194?

Severity scoring for CVE-2018-9194 is pending analysis. The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.

How do I fix CVE-2018-9194?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-9194?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST