{
    "id": "CVE-2016-1838",
    "published": "2016-05-20 10:59:52",
    "last_modified": "2026-06-17 00:42:43",
    "cvss_score": "5.5",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
    "cwe": "CWE-125",
    "description": "The xmlPArserPrintFileContextInternal function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to cause a denial of service (heap-based buffer over-read) via a crafted XML document.",
    "epss_score": "0.06943",
    "epss_percentile": "0.93907",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-30 18:17:15",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "apple",
            "product": "iphone_os"
        },
        {
            "vendor": "apple",
            "product": "mac_os_x"
        },
        {
            "vendor": "apple",
            "product": "tvos"
        },
        {
            "vendor": "apple",
            "product": "watchos"
        },
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "mcafee",
            "product": "web_gateway"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_desktop"
        },
        {
            "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": "xmlsoft",
            "product": "libxml2"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "39493",
            "title": "libxml2 - xmlParserPrintFileContextInternal Heap Buffer Overread",
            "date": "2016-02-24",
            "url": "https://www.exploit-db.com/exploits/39493"
        }
    ],
    "refs_list": [
        "http://lists.apple.com/archives/security-announce/2016/May/msg00001.html",
        "http://lists.apple.com/archives/security-announce/2016/May/msg00002.html",
        "http://lists.apple.com/archives/security-announce/2016/May/msg00003.html",
        "http://lists.apple.com/archives/security-announce/2016/May/msg00004.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2957.html",
        "http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html",
        "http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html",
        "http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html",
        "http://www.securityfocus.com/bid/90691",
        "http://www.securitytracker.com/id/1035890",
        "http://www.ubuntu.com/usn/USN-2994-1",
        "http://xmlsoft.org/news.html",
        "https://access.redhat.com/errata/RHSA-2016:1292",
        "https://bugs.chromium.org/p/project-zero/issues/detail?id=639",
        "https://bugzilla.gnome.org/show_bug.cgi?id=758588",
        "https://git.gnome.org/browse/libxml2/commit/?id=db07dd613e461df93dde7902c6505629bf0734e9",
        "https://kc.mcafee.com/corporate/index?page=content&id=SB10170",
        "https://security.gentoo.org/glsa/201701-37",
        "https://support.apple.com/HT206564",
        "https://support.apple.com/HT206566",
        "https://support.apple.com/HT206567",
        "https://support.apple.com/HT206568",
        "https://www.debian.org/security/2016/dsa-3593",
        "https://www.tenable.com/security/tns-2016-18",
        "http://lists.apple.com/archives/security-announce/2016/May/msg00001.html"
    ]
}