{
    "id": "CVE-2021-27562",
    "published": "2021-05-25 19:15:07",
    "last_modified": "2026-06-17 03:45:08",
    "cvss_score": "5.5",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "cwe": "CWE-787",
    "description": "In Arm Trusted Firmware M through 1.2, the NS world may trigger a system halt, an overwrite of secure data, or the printing out of secure data when calling secure functions under the NSPE handler mode.",
    "epss_score": "0.03093",
    "epss_percentile": "0.87221",
    "kev": 1,
    "kev_due": "2021-11-17",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:27:29",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2021-11-17."
    },
    "products": [
        {
            "vendor": "trustedfirmware",
            "product": "trusted_firmware-m"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2021-27562",
        "date_added": "2021-11-03",
        "due_date": "2021-11-17",
        "vendor": "Arm",
        "product": "Trusted Firmware",
        "name": "Arm Trusted Firmware Out-of-Bounds Write Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://developer.arm.com/support/arm-security-updates",
        "https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst",
        "https://developer.arm.com/support/arm-security-updates",
        "https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/tree/docs/security/security_advisories/svc_caller_sp_fetching_vulnerability.rst",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-27562"
    ]
}