CVE-2018-13381
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.
Key facts
- CVSS score
- 5.3 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L- Weakness (CWE)
- CWE-119
- EPSS score
- 1.8% (77th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2018-5325)
- Published
- June 4, 2019
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2018-5325 in the EU Vulnerability Database. Last updated in EUVD on October 25, 2024.
View on the EU Vulnerability DatabaseAffected products
- fortinet / fortios
- fortinet / fortiproxy
- fortinet / fortiproxy
Certified products that may be affected
6 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- FortiOS 5.6 - Fortinet, Inc. - FIPS 140 3639 - historical
- FortiProxy-400E/2000E/4000E - Fortinet, Inc. - FIPS 140 3628 - historical
- Fortinet FortiProxy v1.0 - Fortinet, Inc. - Common Criteria 383-4-475 - archived
- FortiOS 5.2 - Fortinet, Inc. - FIPS 140 2765 - historical
- FortiOS™ - Fortinet, Inc. - FIPS 140 1754 - historical
See all 6 in the Security Certifications Explorer.
References
- https://fortiguard.com/advisory/FG-IR-18-387(Mitigation, Vendor Advisory)
- https://fortiguard.com/advisory/FG-IR-20-232(Vendor Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain