CVE-2018-13379

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 1.000 · 100 %ileexploit · functionalEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 17 exploits · functional

Likely / severe?

100.0% (100th) EPSS

CVSS 5 · medium

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2021-11-03remediate by 2022-05-03

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-26

Fortinet FortiOS SSL VPN Path Traversal Vulnerability

An Improper Limitation of a Pathname to a Restricted Directory ("Path Traversal") in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.3 to 5.6.7 and 5.4.6 to 5.4.12 and FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7 under SSL VPN web portal allows an unauthenticated attacker to download system files via special crafted HTTP resource requests.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5–9.8

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Hsecondary · ENISA EU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Hsecondary · psirt@fortinet.comexploitability 3.9 · impact 5.2

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USprimaryCWE-22US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

T1190Exploit Public-Facing Application — This is a path traversal vulnerability that allows adversary to download system files through specially-crafted HTTP requests.exploitation

exploits (17)

Public proof-of-concept and weaponised exploit code.

auxiliary/gather/fortios_vpnssl_traversal_creds_leakFortiOS Path Traversal Credential Gathererfunctional · metasploit
EDB-47287Fortinet FortiOS 5.6.3 - 5.6.7 / FortiOS 6.0.0 - 6.0.4 - Credentials Disclosure (Metasploit)PoC · exploit_db
EDB-47288Fortinet FortiOS 5.6.3 - 5.6.7 / FortiOS 6.0.0 - 6.0.4 - Credentials DisclosurePoC · exploit_db
0xHunter/FortiOS-Credentials-DisclosureCVE-2018-13379 ExploitPoC · poc_in_github
B1anda0/CVE-2018-13379Fortinet FortiOS路径遍历漏洞（CVE-2018-13379）批量检测脚本PoC · poc_in_github
Blazz3/cve2018-13379-nmap-scriptCVE-2018-13379 Script for Nmap NSE.PoC · poc_in_github

affected products (9)

Products and version ranges known to be affected.

Fortinet Fortinet FortiOS, FortiProxy≤ FortiOS 6.0.0 to 6.0.4, 5.6.3 to 5.6.7 and 5.4.6 to 5.4.12, FortiProxy 2.0.0, 1.2.0 to 1.2.8, 1.1.0 to 1.1.6, 1.0.0 to 1.0.7enisa_euvdEU
Fortinet Inc. FortiOS5.4 → 5.4.12fstec_bduRU
Fortinet Inc. FortiOS5.6.3 → 5.6.7fstec_bduRU
Fortinet Inc. FortiOS6.0.0 → 6.0.4fstec_bduRU
fortinet fortios5.4.6 → 5.4.13nvdUScpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
fortinet fortios5.6.3 → 5.6.8nvdUScpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
fortinet fortios6.0.0 → 6.0.5nvdUScpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
fortinet fortiproxy< 1.2.9nvdUScpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*
fortinet fortiproxy= 2.0.0nvdUScpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2019-06-04modified 2026-06-17

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+12495 more

references (20)

External citations — patches, advisories, analysis.

scry

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