{
    "id": "CVE-2011-4862",
    "published": "2011-12-25 01:55:02",
    "last_modified": "2026-06-16 23:35:31",
    "cvss_score": "10.0",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
    "cwe": "CWE-120",
    "description": "Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2 and earlier, Heimdal 1.5.1 and earlier, GNU inetutils, and possibly other products allows remote attackers to execute arbitrary code via a long encryption key, as exploited in the wild in December 2011.",
    "epss_score": "0.94983",
    "epss_percentile": "0.99860",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:18:13",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "freebsd",
            "product": "freebsd"
        },
        {
            "vendor": "gnu",
            "product": "inetutils"
        },
        {
            "vendor": "heimdal_project",
            "product": "heimdal"
        },
        {
            "vendor": "mit",
            "product": "krb5-appl"
        },
        {
            "vendor": "opensuse",
            "product": "opensuse"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_desktop"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_server"
        },
        {
            "vendor": "suse",
            "product": "linux_enterprise_software_development_kit"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "18368",
            "title": "Linux BSD-derived Telnet Service Encryption Key ID - Remote Buffer Overflow (Metasploit)",
            "date": "2012-01-14",
            "url": "https://www.exploit-db.com/exploits/18368"
        },
        {
            "source": "exploit-db",
            "ref_id": "18369",
            "title": "FreeBSD - Telnet Service Encryption Key ID Buffer Overflow (Metasploit)",
            "date": "2012-01-14",
            "url": "https://www.exploit-db.com/exploits/18369"
        },
        {
            "source": "exploit-db",
            "ref_id": "18280",
            "title": "TelnetD encrypt_keyid - Function Pointer Overwrite",
            "date": "2011-12-26",
            "url": "https://www.exploit-db.com/exploits/18280"
        }
    ],
    "refs_list": [
        "http://archives.neohapsis.com/archives/bugtraq/2011-12/0172.html",
        "http://git.savannah.gnu.org/cgit/inetutils.git/commit/?id=665f1e73cdd9b38e2d2e11b8db9958a315935592",
        "http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071627.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071640.html",
        "http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006117.html",
        "http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006118.html",
        "http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006119.html",
        "http://lists.freebsd.org/pipermail/freebsd-security/2011-December/006120.html",
        "http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00002.html",
        "http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00004.html",
        "http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00005.html",
        "http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00007.html",
        "http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00010.html",
        "http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00011.html",
        "http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00014.html",
        "http://lists.opensuse.org/opensuse-security-announce/2012-01/msg00015.html",
        "http://osvdb.org/78020",
        "http://secunia.com/advisories/46239",
        "http://secunia.com/advisories/47341",
        "http://secunia.com/advisories/47348",
        "http://secunia.com/advisories/47357",
        "http://secunia.com/advisories/47359",
        "http://secunia.com/advisories/47373",
        "http://secunia.com/advisories/47374",
        "http://secunia.com/advisories/47397"
    ]
}