CVE-2026-21741 Open redirect in FortiNAC-F

Low 2.2 Published Updated

A remote privileged attacker can redirect users to arbitrary websites via a crafted CSV file in FortiNAC-F.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-21741?

CVE-2026-21741 is a low-severity vulnerability in Fortinet FortiNAC-F, published on 14 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

An URL Redirection to Untrusted Site ('Open Redirect') vulnerability [CWE-601] vulnerability in Fortinet FortiNAC-F 7.6.0 through 7.6.5, FortiNAC-F 7.4 all versions, FortiNAC-F 7.2 all versions may allow a remote privileged attacker with system administrator role to redirect users to an arbitrary website via crafted CSV file.

Weakness: CWE-601

Which versions are affected by CVE-2026-21741?

It affects 1 product.

Products include Fortinet Fortinac-F.

How do I fix CVE-2026-21741?

No fix has been published for CVE-2026-21741 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-21741 being exploited?

There is no known exploitation of CVE-2026-21741 in the wild and no public exploit code.

Sources

Also known as GHSA-9fmp-fvvg-6vr2.

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