CVE-2018-13379

As of 2025-10-24, CVE-2018-13379 is a CVSS 9.1 (CRITICAL-severity) vulnerability. CISA KEV-listed (known exploited). EPSS exploitation probability 94.5%. Threadlinqs Intelligence tracks 2 threats exploiting it.

Last updated: 2025-10-24

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 v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Weaknesses (CWE)

CWE-22

Exploitation status

CISA KEV-listed (known exploited)

Threats tracking this CVE

• FortiBleed: Mass Credential Compromise Campaign Against Internet-Exposed Fortinet FortiGate Devices (86,644 Devices, 194 Countries) — CRITICAL
• FortiBleed Campaign: Mass FortiGate SSL VPN / Admin Credential Exposure Affecting ~73,932 Fortinet Firewalls Across 194 Countries — CRITICAL

References

• https://fortiguard.com/advisory/FG-IR-18-384
• https://www.fortiguard.com/psirt/FG-IR-20-233
• https://fortiguard.com/advisory/FG-IR-18-384
• https://www.fortiguard.com/psirt/FG-IR-20-233
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13379

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Enriched from CVE.org, NVD (this product uses the NVD API but is not endorsed or certified by the NVD), FIRST EPSS, CISA KEV, and GitHub Security Advisories.