No exploitation reported

CVE-2018-13381

No exploitation reported by the sources we read.

Published2019-06-04
WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2019-06-0421:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-13381?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-13381?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Fortinet FortiOS

Branch	Affected	Fixed in	Source
5.2	≤ 5.2.14	no fix published	NVD
5.4	≥ 5.4.0, ≤ 5.4.12	no fix published	NVD
5.6	≥ 5.6.0, ≤ 5.6.10	no fix published	NVD
6.0	≥ 6.0.0, ≤ 6.0.4	no fix published	NVD

Fortinet fortiproxy

Branch	Affected	Fixed in	Source
1.2	≤ 1.2.8	no fix published	NVD
2.0	= 2.0.0	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

fortiguard.comMitigation · Vendor Advisory
fortiguard.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2024-10-24
OpenCVESSVC decisionnone—
CNACVSS 3.15.3read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-119read 2026-10-23
FIRST EPSSEPSS score1.8 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2019-06-04
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-13381?

Is CVE-2018-13381 actively exploited?

Active exploitation of CVE-2018-13381 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-13381?

CVE-2018-13381 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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