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CVE-2016-3978

MEDIUM · CVSS 6.1EPSS 5.9%EU EUVD

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."

Key facts

CVSS score
6.1 (v3.0)
Severity
MEDIUM
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-79
EPSS score
5.9% (93th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2016-4987)
Published
April 8, 2016
NVD last modified
June 17, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2016-4987 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios
  • fortinet / fortios

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

  • FortiOS 5.2 - Fortinet, Inc. - FIPS 140 2765 - historical

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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