{
    "id": "CVE-2006-2369",
    "published": "2006-05-15 16:06:00",
    "last_modified": "2026-06-16 22:24:52",
    "cvss_score": "7.5",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
    "cwe": "CWE-287",
    "description": "RealVNC 4.1.1, and other products that use RealVNC such as AdderLink IP and Cisco CallManager, allows remote attackers to bypass authentication via a request in which the client specifies an insecure security type such as \"Type 1 - None\", which is accepted even if it is not offered by the server, as originally demonstrated using a long password.",
    "epss_score": "0.92355",
    "epss_percentile": "0.99822",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:15:02",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "vnc",
            "product": "realvnc"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "36932",
            "title": "RealVNC 4.1.0/4.1.1 - Authentication Bypass",
            "date": "2012-05-13",
            "url": "https://www.exploit-db.com/exploits/36932"
        },
        {
            "source": "exploit-db",
            "ref_id": "17719",
            "title": "RealVNC - Authentication Bypass (Metasploit)",
            "date": "2011-08-26",
            "url": "https://www.exploit-db.com/exploits/17719"
        },
        {
            "source": "exploit-db",
            "ref_id": "1791",
            "title": "RealVNC 4.1.0 < 4.1.1 - VNC Null Authentication Bypass",
            "date": "2006-05-16",
            "url": "https://www.exploit-db.com/exploits/1791"
        },
        {
            "source": "exploit-db",
            "ref_id": "1794",
            "title": "RealVNC 4.1.0 < 4.1.1 - VNC Null Authentication Bypass (Metasploit)",
            "date": "2006-05-15",
            "url": "https://www.exploit-db.com/exploits/1794"
        }
    ],
    "refs_list": [
        "http://marc.info/?l=full-disclosure&m=114768344111131&w=2",
        "http://marc.info/?l=vnc-list&m=114755444130188&w=2",
        "http://seclists.org/fulldisclosure/2022/May/29",
        "http://secunia.com/advisories/20107",
        "http://secunia.com/advisories/20109",
        "http://secunia.com/advisories/20789",
        "http://securityreason.com/securityalert/8355",
        "http://securitytracker.com/id?1016083",
        "http://www.cisco.com/warp/public/707/cisco-sr-20060622-cmm.shtml",
        "http://www.intelliadmin.com/blog/2006/05/security-flaw-in-realvnc-411.html",
        "http://www.intelliadmin.com/blog/2006/05/vnc-flaw-proof-of-concept.html",
        "http://www.kb.cert.org/vuls/id/117929",
        "http://www.osvdb.org/25479",
        "http://www.realvnc.com/products/free/4.1/release-notes.html",
        "http://www.securityfocus.com/archive/1/433994/100/0/threaded",
        "http://www.securityfocus.com/archive/1/434015/100/0/threaded",
        "http://www.securityfocus.com/archive/1/434117/100/0/threaded",
        "http://www.securityfocus.com/archive/1/434518/100/0/threaded",
        "http://www.securityfocus.com/archive/1/434560/100/0/threaded",
        "http://www.securityfocus.com/archive/1/438175/100/0/threaded",
        "http://www.securityfocus.com/archive/1/438368/100/0/threaded",
        "http://www.securityfocus.com/bid/17978",
        "http://www.vupen.com/english/advisories/2006/1790",
        "http://www.vupen.com/english/advisories/2006/1821",
        "http://www.vupen.com/english/advisories/2006/2492"
    ]
}