{
    "id": "CVE-2021-1905",
    "published": "2021-05-07 09:15:08",
    "last_modified": "2026-06-17 03:32:47",
    "cvss_score": "8.4",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-416",
    "description": "Possible use after free due to improper handling of memory mapping of multiple processes simultaneously. in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables",
    "epss_score": "0.01543",
    "epss_percentile": "0.73949",
    "kev": 1,
    "kev_due": "2022-05-03",
    "has_exploit": 0,
    "updated_at": "2026-09-27 18:17:28",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-05-03."
    },
    "products": [
        {
            "vendor": "qualcomm",
            "product": "apq8009"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8009_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8009w"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8009w_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8017"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8017_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8053"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8053_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8064au"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8064au_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8096au"
        },
        {
            "vendor": "qualcomm",
            "product": "apq8096au_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "aqt1000"
        },
        {
            "vendor": "qualcomm",
            "product": "aqt1000_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "ar8031"
        },
        {
            "vendor": "qualcomm",
            "product": "ar8031_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "ar8035"
        },
        {
            "vendor": "qualcomm",
            "product": "ar8035_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "ar8151"
        },
        {
            "vendor": "qualcomm",
            "product": "ar8151_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "csra6620"
        },
        {
            "vendor": "qualcomm",
            "product": "csra6620_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "csra6640"
        },
        {
            "vendor": "qualcomm",
            "product": "csra6640_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "fsm10055"
        },
        {
            "vendor": "qualcomm",
            "product": "fsm10055_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "fsm10056"
        },
        {
            "vendor": "qualcomm",
            "product": "fsm10056_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9206"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9206_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9607"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9607_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9626"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9626_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9628"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9628_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9650"
        },
        {
            "vendor": "qualcomm",
            "product": "mdm9650_firmware"
        },
        {
            "vendor": "qualcomm",
            "product": "msm8909w"
        },
        {
            "vendor": "qualcomm",
            "product": "msm8909w_firmware"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2021-1905",
        "date_added": "2021-11-03",
        "due_date": "2022-05-03",
        "vendor": "Qualcomm",
        "product": "Multiple Chipsets",
        "name": "Qualcomm Multiple Chipsets Use-After-Free Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://www.qualcomm.com/company/product-security/bulletins/may-2021-bulletin",
        "https://www.qualcomm.com/company/product-security/bulletins/may-2021-bulletin",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1905"
    ]
}