{
    "id": "CVE-2022-25236",
    "published": "2022-02-16 01:15:07",
    "last_modified": "2026-06-17 04:33:15",
    "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-668",
    "description": "xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs.",
    "epss_score": "0.35867",
    "epss_percentile": "0.98427",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-02 18:17:33",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 35.9% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "libexpat_project",
            "product": "libexpat"
        },
        {
            "vendor": "oracle",
            "product": "http_server"
        },
        {
            "vendor": "oracle",
            "product": "zfs_storage_appliance_kit"
        },
        {
            "vendor": "siemens",
            "product": "sinema_remote_connect_server"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://packetstormsecurity.com/files/167238/Zoom-XMPP-Stanza-Smuggling-Remote-Code-Execution.html",
        "http://www.openwall.com/lists/oss-security/2022/02/19/1",
        "https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf",
        "https://github.com/libexpat/libexpat/pull/561",
        "https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/",
        "https://security.gentoo.org/glsa/202209-24",
        "https://security.netapp.com/advisory/ntap-20220303-0008/",
        "https://www.debian.org/security/2022/dsa-5085",
        "https://www.oracle.com/security-alerts/cpuapr2022.html",
        "http://packetstormsecurity.com/files/167238/Zoom-XMPP-Stanza-Smuggling-Remote-Code-Execution.html",
        "http://www.openwall.com/lists/oss-security/2022/02/19/1",
        "https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf",
        "https://github.com/libexpat/libexpat/pull/561",
        "https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/",
        "https://security.gentoo.org/glsa/202209-24",
        "https://security.netapp.com/advisory/ntap-20220303-0008/",
        "https://www.debian.org/security/2022/dsa-5085",
        "https://www.oracle.com/security-alerts/cpuapr2022.html"
    ]
}