{
    "id": "CVE-2016-6515",
    "published": "2016-08-07 21:59:09",
    "last_modified": "2026-06-17 00:51:18",
    "cvss_score": "7.5",
    "cvss_severity": "HIGH",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "cwe": "CWE-20",
    "description": "The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.",
    "epss_score": "0.58568",
    "epss_percentile": "0.99074",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:20:40",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "openbsd",
            "product": "openssh"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "40888",
            "title": "OpenSSH 7.2 - Denial of Service",
            "date": "2016-12-07",
            "url": "https://www.exploit-db.com/exploits/40888"
        }
    ],
    "refs_list": [
        "http://openwall.com/lists/oss-security/2016/08/01/2",
        "http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html",
        "http://www.securityfocus.com/bid/92212",
        "http://www.securitytracker.com/id/1036487",
        "https://access.redhat.com/errata/RHSA-2017:2029",
        "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
        "https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf",
        "https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97",
        "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2L6RW34VFNXYNVVN2CN73YAGJ5VMTFU/",
        "https://security.FreeBSD.org/advisories/FreeBSD-SA-17:06.openssh.asc",
        "https://security.netapp.com/advisory/ntap-20171130-0003/",
        "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03779en_us",
        "https://www.exploit-db.com/exploits/40888/",
        "http://openwall.com/lists/oss-security/2016/08/01/2",
        "http://packetstormsecurity.com/files/140070/OpenSSH-7.2-Denial-Of-Service.html",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html",
        "http://www.securityfocus.com/bid/92212",
        "http://www.securitytracker.com/id/1036487",
        "https://access.redhat.com/errata/RHSA-2017:2029",
        "https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf",
        "https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf",
        "https://github.com/openssh/openssh-portable/commit/fcd135c9df440bcd2d5870405ad3311743d78d97",
        "https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html"
    ]
}