{
    "id": "CVE-2019-12583",
    "published": "2019-06-27 14:15:10",
    "last_modified": "2026-06-17 02:14:54",
    "cvss_score": "9.1",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
    "cwe": "CWE-425",
    "description": "Missing Access Control in the \"Free Time\" component of several Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator. This can lead to unauthorised network access or Denial of Service.",
    "epss_score": "0.43926",
    "epss_percentile": "0.98713",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-02 18:17:23",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 43.9% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "zyxel",
            "product": "uag2100"
        },
        {
            "vendor": "zyxel",
            "product": "uag2100_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "uag4100"
        },
        {
            "vendor": "zyxel",
            "product": "uag4100_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "uag5100"
        },
        {
            "vendor": "zyxel",
            "product": "uag5100_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "usg110"
        },
        {
            "vendor": "zyxel",
            "product": "usg110_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "usg1100"
        },
        {
            "vendor": "zyxel",
            "product": "usg1100_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "usg1900"
        },
        {
            "vendor": "zyxel",
            "product": "usg1900_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "usg210"
        },
        {
            "vendor": "zyxel",
            "product": "usg210_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "usg2200-vpn"
        },
        {
            "vendor": "zyxel",
            "product": "usg2200-vpn_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "usg310"
        },
        {
            "vendor": "zyxel",
            "product": "usg310_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_110"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_110_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_1100"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_1100_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_310"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_310_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_vpn100"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_vpn100_firmware"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_vpn300"
        },
        {
            "vendor": "zyxel",
            "product": "zywall_vpn300_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss/",
        "https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml",
        "https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss/",
        "https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml"
    ]
}