How severe is CVE-2018-13384?

CVE-2018-13384 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-2018-13384 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-13384?

CVE-2018-13384 affects Fortinet Fortios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-13384?

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

When was CVE-2018-13384 published?

CVE-2018-13384 was published on 2019-06-04 and last updated on 2026-06-17.

CVE-2018-13384

CVE-2018-13384 is a medium-severity vulnerability in Fortinet Fortios 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-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Fortinet Fortios
Published: 2019-06-04
Last modified: 2026-06-17

Description

A Host Header Redirection vulnerability in Fortinet FortiOS all versions below 6.0.5 under SSL VPN web portal allows a remote attacker to potentially poison HTTP cache and subsequently redirect SSL VPN web portal users to arbitrary web domains.

Frequently asked questions

What is CVE-2018-13384?: A Host Header Redirection vulnerability in Fortinet FortiOS all versions below 6.0.5 under SSL VPN web portal allows a remote attacker to potentially poison HTTP cache and subsequently redirect SSL VPN web portal users to arbitrary web domains.
How severe is CVE-2018-13384?: CVE-2018-13384 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-2018-13384 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-13384?: CVE-2018-13384 affects Fortinet Fortios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-13384?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-13384 published?: CVE-2018-13384 was published on 2019-06-04 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-19-002

Affected products (1)

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*

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