How severe is CVE-2018-13366?

CVE-2018-13366 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2018-13366 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-13366?

CVE-2018-13366 primarily affects Fortinet Fortios. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-13366?

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

When was CVE-2018-13366 published?

CVE-2018-13366 was published on 2019-04-09 and last updated on 2026-06-17.

CVE-2018-13366

CVE-2018-13366 is a medium-severity vulnerability in Fortinet Fortios with a CVSS 3.x base score of 5.3. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Fortinet Fortios
Published: 2019-04-09
Last modified: 2026-06-17

Description

An information disclosure vulnerability in Fortinet FortiOS 6.0.1, 5.6.7 and below allows attacker to reveals serial number of FortiGate via hostname field defined in connection control setup packets of PPTP protocol.

Frequently asked questions

What is CVE-2018-13366?: An information disclosure vulnerability in Fortinet FortiOS 6.0.1, 5.6.7 and below allows attacker to reveals serial number of FortiGate via hostname field defined in connection control setup packets of PPTP protocol.
How severe is CVE-2018-13366?: CVE-2018-13366 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2018-13366 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-13366?: CVE-2018-13366 primarily affects Fortinet Fortios. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-13366?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-13366 published?: CVE-2018-13366 was published on 2019-04-09 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-18-101

Affected products (3)

cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.0.0:*:*:*:*:*:*:*
cpe:2.3:o:fortinet:fortios:6.0.1:*:*:*:*:*:*:*

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