{
    "id": "CVE-2019-5544",
    "published": "2019-12-06 16:15:11",
    "last_modified": "2026-06-17 02:37:52",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-787",
    "description": "OpenSLP as used in ESXi and the Horizon DaaS appliances has a heap overwrite issue. VMware has evaluated the severity of this issue to be in the Critical severity range with a maximum CVSSv3 base score of 9.8.",
    "epss_score": "0.97258",
    "epss_percentile": "0.99895",
    "kev": 1,
    "kev_due": "2022-05-03",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:25:09",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-05-03."
    },
    "products": [
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        },
        {
            "vendor": "openslp",
            "product": "openslp"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_desktop"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_for_ibm_z_systems"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_for_ibm_z_systems_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_for_power_big_endian"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_for_power_big_endian_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_for_power_little_endian"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_for_power_little_endian_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_aus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_tus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_workstation"
        },
        {
            "vendor": "vmware",
            "product": "esxi"
        },
        {
            "vendor": "vmware",
            "product": "horizon_daas"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2019-5544",
        "date_added": "2021-11-03",
        "due_date": "2022-05-03",
        "vendor": "VMware",
        "product": "VMware ESXi and Horizon DaaS",
        "name": "VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Vulnerability",
        "ransomware": 1
    },
    "exploits": [],
    "refs_list": [
        "http://www.openwall.com/lists/oss-security/2019/12/10/2",
        "http://www.openwall.com/lists/oss-security/2019/12/11/2",
        "http://www.vmware.com/security/advisories/VMSA-2019-0022.html",
        "https://access.redhat.com/errata/RHSA-2019:4240",
        "https://access.redhat.com/errata/RHSA-2020:0199",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA3LYAJ2NRKMOZLZOQNDJ5TNQRFMWGHF/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZPXXJZLPLAQULBCJVI5NNWZ3PGWXGXWG/",
        "https://security.gentoo.org/glsa/202005-12",
        "http://www.openwall.com/lists/oss-security/2019/12/10/2",
        "http://www.openwall.com/lists/oss-security/2019/12/11/2",
        "http://www.vmware.com/security/advisories/VMSA-2019-0022.html",
        "https://access.redhat.com/errata/RHSA-2019:4240",
        "https://access.redhat.com/errata/RHSA-2020:0199",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DA3LYAJ2NRKMOZLZOQNDJ5TNQRFMWGHF/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZPXXJZLPLAQULBCJVI5NNWZ3PGWXGXWG/",
        "https://security.gentoo.org/glsa/202005-12",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5544"
    ]
}