CVE-2018-13380
mediumpriority · attend · 46EPSS 0.625 · 99 %ileEURUUSEPSS · scored 2026-10-24
A Cross-site Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, 5.4.0 to 5.4.12, 5.2 and below and Fortinet FortiProxy 2.0.0, 1.2.8 and below under SSL VPN web portal allows attacker to execute unauthorized malicious script code via the error or message handling parameters.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (13)
Products and version ranges known to be affected.
- Fortinet Fortinet FortiOS and FortiProxy≤ FortiGate 6.0.0 through 6.0.4, 5.6.0 through 5.6.7, 5.4.0 through 5.4.12, 5.2 and earlier and FortiProxy versions 2.0.0, 1.2.8 and earlierenisa_euvdEU
also known as (6)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (14)
External citations — patches, advisories, analysis.
- http://www.securityfocus.com/bid/108681cnnvd
- https://fortiguard.com/advisory/FG-IR-18-383cnnvd
- https://fortiguard.com/advisory/FG-IR-20-230cnnvd
- https://fortiguard.com/psirt/FG-IR-18-383cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2018-13380cnnvd
- https://vigilance.fr/vulnerability/FortiOS-Cross-Site-Scripting-via-SSL-VPN-Portal-30135cnnvd
- https://vigilance.fr/vulnerability/FortiOS-Cross-Site-Scripting-via-the-VPN-portal-29412cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.0775cnnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan