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Servers and applications

CVE-2016-3978

The Web User Interface (WebUI) in FortiOS 5.0.x before 5.0.13, 5.2.x before 5.2.3, and 5.4.x before 5.4.0 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks or cross-site scripting (XSS) attacks via the "redirect" parameter to "login."

Severity
Medium 6.1
Published
8 Apr 2016
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
5.9% in the next 30 daysHigher than 93% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Cross-site scripting (CWE-79)
Attack
Over the network · No login needed · Needs someone to click or open something
Attacker can
Read some data · Change some data
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Sources
NVD

Affected software

SoftwareAffected versions
Fortinet FortiOSServers and applications · cpe:o:fortinet:fortios
  • Version 5.4
  • Version 5.2.2
  • Version 5.2.1
  • Version 5.2.0
All 17 release lines
  • Version 5.0.0
  • Version 5.0.1
  • Version 5.0.2
  • Version 5.0.3
  • Version 5.0.4
  • Version 5.0.5
  • Version 5.0.6
  • Version 5.0.7
  • Version 5.0.8
  • Version 5.0.9
  • Version 5.0.10
  • Version 5.0.11
  • Version 5.0.12
  • Version 5.2.0
  • Version 5.2.1
  • Version 5.2.2
  • Version 5.4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-3978
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-3978