{
    "id": "CVE-2018-13383",
    "published": "2019-05-29 18:29:00",
    "last_modified": "2026-06-17 01:39:18",
    "cvss_score": "4.3",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
    "cwe": "CWE-787",
    "description": "A heap buffer overflow in Fortinet FortiOS 6.0.0 through 6.0.4, 5.6.0 through 5.6.10, 5.4.0 through 5.4.12, 5.2.14 and earlier and FortiProxy 2.0.0, 1.2.8 and earlier in the SSL VPN web portal may cause the SSL VPN web service termination for logged in users due to a failure to properly handle javascript href data when proxying webpages.",
    "epss_score": "0.33647",
    "epss_percentile": "0.98335",
    "kev": 1,
    "kev_due": "2022-07-10",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:24:20",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-07-10."
    },
    "products": [
        {
            "vendor": "fortinet",
            "product": "fortios"
        },
        {
            "vendor": "fortinet",
            "product": "fortiproxy"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2018-13383",
        "date_added": "2022-01-10",
        "due_date": "2022-07-10",
        "vendor": "Fortinet",
        "product": "FortiOS and FortiProxy",
        "name": "Fortinet FortiOS and FortiProxy Out-of-bounds Write",
        "ransomware": 1
    },
    "exploits": [],
    "refs_list": [
        "https://fortiguard.com/advisory/FG-IR-18-388",
        "https://fortiguard.com/advisory/FG-IR-20-229",
        "https://fortiguard.com/advisory/FG-IR-18-388",
        "https://fortiguard.com/advisory/FG-IR-20-229",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-13383"
    ]
}