{
    "id": "CVE-2005-2640",
    "published": "2005-08-23 04:00:00",
    "last_modified": "2026-06-16 22:15:23",
    "cvss_score": "5.0",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
    "cwe": null,
    "description": "Behavioral discrepancy information leak in Juniper Netscreen VPN running ScreenOS 5.2.0 and earlier, when using IKE with pre-shared key authentication, allows remote attackers to enumerate valid usernames via an IKE Aggressive Mode packet, which generates a response if the username is valid but does not respond when the username is invalid.",
    "epss_score": "0.07093",
    "epss_percentile": "0.94030",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-30 18:17:04",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "juniper",
            "product": "netscreen_screenos"
        },
        {
            "vendor": "juniper",
            "product": "netscreen-5gt"
        },
        {
            "vendor": "juniper",
            "product": "netscreen-idp"
        },
        {
            "vendor": "juniper",
            "product": "netscreen-idp_10"
        },
        {
            "vendor": "juniper",
            "product": "netscreen-idp_100"
        },
        {
            "vendor": "juniper",
            "product": "netscreen-idp_1000"
        },
        {
            "vendor": "juniper",
            "product": "netscreen-idp_500"
        },
        {
            "vendor": "neoteris",
            "product": "instant_virtual_extranet"
        },
        {
            "vendor": "netscreen",
            "product": "netscreen-sa_5000_series"
        },
        {
            "vendor": "netscreen",
            "product": "netscreen-sa_5020_series"
        },
        {
            "vendor": "netscreen",
            "product": "netscreen-sa_5050_series"
        },
        {
            "vendor": "netscreen",
            "product": "ns-10"
        },
        {
            "vendor": "netscreen",
            "product": "ns-100"
        },
        {
            "vendor": "netscreen",
            "product": "ns-204"
        },
        {
            "vendor": "netscreen",
            "product": "ns-500"
        },
        {
            "vendor": "netscreen",
            "product": "ns-50ns25"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "26168",
            "title": "Juniper NetScreen 5.0 - VPN 'Username' Enumeration",
            "date": "2005-08-18",
            "url": "https://www.exploit-db.com/exploits/26168"
        }
    ],
    "refs_list": [
        "http://marc.info/?l=bugtraq&m=112438068426034&w=2",
        "http://secunia.com/advisories/16474/",
        "http://securitytracker.com/id?1014728",
        "http://www.nta-monitor.com/news/vpn-flaws/juniper/netscreen/index.htm",
        "http://www.securityfocus.com/bid/14595",
        "http://marc.info/?l=bugtraq&m=112438068426034&w=2",
        "http://secunia.com/advisories/16474/",
        "http://securitytracker.com/id?1014728",
        "http://www.nta-monitor.com/news/vpn-flaws/juniper/netscreen/index.htm",
        "http://www.securityfocus.com/bid/14595"
    ]
}