{
    "id": "CVE-2017-11121",
    "published": "2017-09-28 01:29:01",
    "last_modified": "2026-06-17 01:01:15",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-119",
    "description": "On Broadcom BCM4355C0 Wi-Fi chips 9.44.78.27.0.1.56 and other chips, properly crafted malicious over-the-air Fast Transition frames can potentially trigger internal Wi-Fi firmware heap and/or stack overflows, leading to denial of service or other effects, aka B-V2017061205.",
    "epss_score": "0.02794",
    "epss_percentile": "0.86052",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-11 18:17:15",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "apple",
            "product": "iphone_os"
        },
        {
            "vendor": "apple",
            "product": "tvos"
        },
        {
            "vendor": "broadcom",
            "product": "bcm4355c0"
        },
        {
            "vendor": "broadcom",
            "product": "bcm4355c0_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://packetstormsecurity.com/files/144329/Broadcom-802.11r-FT-Reassociation-Response-Overflows.html",
        "http://www.securityfocus.com/bid/100984",
        "https://bugs.chromium.org/p/project-zero/issues/detail?id=1291",
        "https://lists.apple.com/archives/security-announce/2017/Sep/msg00007.html",
        "https://lists.apple.com/archives/security-announce/2017/Sep/msg00009.html",
        "https://source.android.com/security/bulletin/2017-09-01",
        "https://support.apple.com/HT208112",
        "https://support.apple.com/HT208113",
        "https://support.apple.com/en-us/HT208112",
        "https://support.apple.com/en-us/HT208113",
        "http://packetstormsecurity.com/files/144329/Broadcom-802.11r-FT-Reassociation-Response-Overflows.html",
        "http://www.securityfocus.com/bid/100984",
        "https://bugs.chromium.org/p/project-zero/issues/detail?id=1291",
        "https://lists.apple.com/archives/security-announce/2017/Sep/msg00007.html",
        "https://lists.apple.com/archives/security-announce/2017/Sep/msg00009.html",
        "https://source.android.com/security/bulletin/2017-09-01",
        "https://support.apple.com/HT208112",
        "https://support.apple.com/HT208113",
        "https://support.apple.com/en-us/HT208112",
        "https://support.apple.com/en-us/HT208113"
    ]
}