How severe is CVE-2019-5594?

CVE-2019-5594 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-5594 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-5594?

CVE-2019-5594 primarily affects Fortinet Fortinac. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-5594?

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

When was CVE-2019-5594 published?

CVE-2019-5594 was published on 2019-08-23 and last updated on 2026-06-17.

CVE-2019-5594

CVE-2019-5594 is a medium-severity vulnerability in Fortinet Fortinac with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fortinet Fortinac
Published: 2019-08-23
Last modified: 2026-06-17

Description

An Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") in Fortinet FortiNAC 8.3.0 to 8.3.6 and 8.5.0 admin webUI may allow an unauthenticated attacker to perform a reflected XSS attack via the search field in the webUI.

Frequently asked questions

What is CVE-2019-5594?: An Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") in Fortinet FortiNAC 8.3.0 to 8.3.6 and 8.5.0 admin webUI may allow an unauthenticated attacker to perform a reflected XSS attack via the search field in the webUI.
How severe is CVE-2019-5594?: CVE-2019-5594 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-5594 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-5594?: CVE-2019-5594 primarily affects Fortinet Fortinac. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-5594?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-5594 published?: CVE-2019-5594 was published on 2019-08-23 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-19-140

Affected products (2)

cpe:2.3:a:fortinet:fortinac:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortinac:8.5.0:*:*:*:*:*:*:*

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