{
    "id": "CVE-2011-5166",
    "published": "2012-09-15 17:55:04",
    "last_modified": "2026-06-16 23:36:04",
    "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-119",
    "description": "Multiple stack-based buffer overflows in KnFTP 1.0.0 allow remote attackers to execute arbitrary code via a long string to the (1) USER, (2) PASS, (3) REIN, (4) QUIT, (5) PORT, (6) PASV, (7) TYPE, (8) STRU, (9) MODE, (10) RETR, (11) STOR, (12) APPE, (13) ALLO, (14) REST, (15) RNFR, (16) RNTO, (17) ABOR, (18) DELE, (19) CWD, (20) LIST, (21) NLST, (22) SITE, (23) STST, (24) HELP, (25) NOOP, (26) MKD, (27) RMD, (28) PWD, (29) CDUP, (30) STOU, (31) SNMT, (32) SYST, and (33) XPWD commands.",
    "epss_score": "0.06481",
    "epss_percentile": "0.93554",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-05 18:17:10",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "elif_keir",
            "product": "knftp"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "18089",
            "title": "KnFTP 1.0 - Remote Buffer Overflow (DEP Bypass) (Metasploit)",
            "date": "2011-11-07",
            "url": "https://www.exploit-db.com/exploits/18089"
        },
        {
            "source": "exploit-db",
            "ref_id": "17870",
            "title": "KnFTP 1.0.0 Server - 'USER' Remote Buffer Overflow",
            "date": "2011-09-19",
            "url": "https://www.exploit-db.com/exploits/17870"
        },
        {
            "source": "exploit-db",
            "ref_id": "17856",
            "title": "KnFTP 1.0.0 Server - Multiple Buffer Overflows (PoC) (SEH)",
            "date": "2011-09-18",
            "url": "https://www.exploit-db.com/exploits/17856"
        },
        {
            "source": "exploit-db",
            "ref_id": "17819",
            "title": "KnFTP Server - Remote Buffer Overflow",
            "date": "2011-09-12",
            "url": "https://www.exploit-db.com/exploits/17819"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/bugtraq/2011-09/0015.html",
        "http://secunia.com/advisories/45907",
        "http://www.exploit-db.com/exploits/17819",
        "http://www.exploit-db.com/exploits/17856",
        "http://www.exploit-db.com/exploits/17870",
        "http://www.exploit-db.com/exploits/18089",
        "http://www.osvdb.org/75147",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/69557",
        "http://archives.neohapsis.com/archives/bugtraq/2011-09/0015.html",
        "http://secunia.com/advisories/45907",
        "http://www.exploit-db.com/exploits/17819",
        "http://www.exploit-db.com/exploits/17856",
        "http://www.exploit-db.com/exploits/17870",
        "http://www.exploit-db.com/exploits/18089",
        "http://www.osvdb.org/75147",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/69557"
    ]
}