How severe is CVE-2026-21741?

CVE-2026-21741 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-21741 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21741?

CVE-2026-21741 affects Fortinet Fortinac-f. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-21741?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-21741 have an EU (EUVD) identifier?

Yes. CVE-2026-21741 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22313.

When was CVE-2026-21741 published?

CVE-2026-21741 was published on 2026-04-14 and last updated on 2026-06-17.

CVE-2026-21741

CVE-2026-21741 is a low-severity vulnerability in Fortinet Fortinac-f with a CVSS 3.x base score of 2.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.

Key facts

Severity: Low (CVSS 3.x base score 2.4)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22313
Weakness: CWE-601
Affected product: Fortinet Fortinac-f
Published: 2026-04-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-21741?: 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.
How severe is CVE-2026-21741?: CVE-2026-21741 has a CVSS 3.x base score of 2.4, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-21741 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21741?: CVE-2026-21741 affects Fortinet Fortinac-f. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-21741?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-21741 have an EU (EUVD) identifier?: Yes. CVE-2026-21741 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22313.
When was CVE-2026-21741 published?: CVE-2026-21741 was published on 2026-04-14 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-118

Affected products (1)

cpe:2.3:a:fortinet:fortinac-f:*:*:*:*:*:*:*:*

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