How severe is CVE-2018-13371?

CVE-2018-13371 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-13371 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-13371?

CVE-2018-13371 affects Fortinet Fortios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-13371?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-13371 published?

CVE-2018-13371 was published on 2020-04-02 and last updated on 2026-06-17.

CVE-2018-13371

CVE-2018-13371 is a high-severity vulnerability in Fortinet Fortios with a CVSS 3.x base score of 8.8. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Fortinet Fortios
Published: 2020-04-02
Last modified: 2026-06-17

Description

An external control of system vulnerability in FortiOS may allow an authenticated, regular user to change the routing settings of the device via connecting to the ZebOS component.

Frequently asked questions

What is CVE-2018-13371?: An external control of system vulnerability in FortiOS may allow an authenticated, regular user to change the routing settings of the device via connecting to the ZebOS component.
How severe is CVE-2018-13371?: CVE-2018-13371 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-13371 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-13371?: CVE-2018-13371 affects Fortinet Fortios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-13371?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-13371 published?: CVE-2018-13371 was published on 2020-04-02 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-18-230

Affected products (1)

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

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