CVE-2018-13381

Name: CVE-2018-13381
Creator: NVD / NIST
Published: 2019-06-04T21:29:00.313+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.75%

Last modified Jun 17, 2026

CVE-2018-13381 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A buffer overflow vulnerability in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.7, 5.4 and earlier versions and FortiProxy 2.0.0, 1.2.8 and earlier versions under SSL VPN web portal allows a non-authenticated attacker to perform a Denial-of-service attack via special craft message payloads.. EPSS estimates a 1.75% chance of exploitation in the next 30 days.

Description

A buffer overflow vulnerability in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.7, 5.4 and earlier versions and FortiProxy 2.0.0, 1.2.8 and earlier versions under SSL VPN web portal allows a non-authenticated attacker to perform a Denial-of-service attack via special craft message payloads.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.75%

75.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Fortinet	Fortiproxy	<= 1.2.8
Fortinet	Fortiproxy	2.0.0
Fortinet	Fortios	<= 5.2.14
Fortinet	Fortios	>= 5.4.0, <= 5.4.12
Fortinet	Fortios	>= 5.6.0, <= 5.6.10
Fortinet	Fortios	>= 6.0.0, <= 6.0.4

References

https://fortiguard.com/advisory/FG-IR-18-387Mitigation, Vendor Advisory
https://fortiguard.com/advisory/FG-IR-20-232Vendor Advisory
https://fortiguard.com/advisory/FG-IR-18-387Mitigation, Vendor Advisory
https://fortiguard.com/advisory/FG-IR-20-232Vendor Advisory

Timeline

Published: Jun 4, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-13381?

How severe is CVE-2018-13381?

CVE-2018-13381 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.75% probability of exploitation in the next 30 days.

How do I fix CVE-2018-13381?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-13381?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST