CVE-2017-14186: Fortinet, Inc. FortiOS vulnerability

CVE-2017-14186: A Cross-site Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, 5.4 and belo...

A Cross-site Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, 5.4 and below versions under SSL VPN web portal allows a remote user to inject arbitrary web script or HTML in the context of the victim's browser via the login redir parameter. An URL Redirection attack may also be feasible by injecting an external URL via the affected parameter.

UnknownCVSS not scoredNot KEV-listedUpdatedOct 25, 2024, 14:10 UTC (UTC+00:00)

Security readout for executives and security teams

Fortinet FortiOS SSL VPN web portals in the listed legacy versions can let a remote user place script or HTML into a victim's browser through the login redirect parameter. This can support phishing, session abuse, or misleading redirects, especially if the VPN portal is internet-facing. Exposure is most likely where affected FortiOS SSL VPN web portals are reachable by users or the internet. The source bundle names FortiOS 6.0.0-6.0.4, 5.6.0-5.6.7, 5.4 and below, with another affected list showing narrower legacy ranges. Treat this as a focused legacy FortiOS SSL VPN cleanup item. It is not supported here as actively exploited, but VPN portals are high-value trust entry points and should not run affected versions. Mitigation focus: Check Fortinet FG-IR-17-242 for fixed FortiOS releases and upgrade guidance.; Prioritize internet-facing SSL VPN portals running listed FortiOS versions.; Restrict SSL VPN portal access where operationally feasible until remediated..

Prepared: Jun 12, 2026, 19:33 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 29, 2017, 19:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://fortiguard.com/advisory/FG-IR-17-242CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

Fortinet, Inc.FortiOS5.6.0 to 5.6.2, 5.4.0 to 5.4.6, 5.2.0 to 5.2.12, 5.0 and belowListed

Weakness

CWE details

No CWE listed

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