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Servers and applications

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 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.

Severity
Medium 5.9
Published
5 Sept 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.1% in the next 30 daysHigher than 66% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Fortinet FortiOSServers and applications · cpe:o:fortinet:fortios
  • From 5.4.6 up to 5.4.9
  • Version 6.0.0
  • Version 6.0.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-9192
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-9192