{
    "id": "CVE-2020-27950",
    "published": "2020-12-08 21:15:13",
    "last_modified": "2026-06-17 03:09:55",
    "cvss_score": "5.5",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
    "cwe": "CWE-665",
    "description": "A memory initialization issue was addressed. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. A malicious application may be able to disclose kernel memory.",
    "epss_score": "0.16520",
    "epss_percentile": "0.96894",
    "kev": 1,
    "kev_due": "2022-05-03",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:26:40",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-05-03."
    },
    "products": [
        {
            "vendor": "apple",
            "product": "ipados"
        },
        {
            "vendor": "apple",
            "product": "iphone_os"
        },
        {
            "vendor": "apple",
            "product": "macos"
        },
        {
            "vendor": "apple",
            "product": "watchos"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2020-27950",
        "date_added": "2021-11-03",
        "due_date": "2022-05-03",
        "vendor": "Apple",
        "product": "Multiple Products",
        "name": "Apple Multiple Products Memory Initialization Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "http://packetstormsecurity.com/files/161296/XNU-Kernel-Mach-Message-Trailers-Memory-Disclosure.html",
        "http://seclists.org/fulldisclosure/2020/Dec/32",
        "https://support.apple.com/en-us/HT211928",
        "https://support.apple.com/en-us/HT211929",
        "https://support.apple.com/en-us/HT211931",
        "https://support.apple.com/en-us/HT211940",
        "https://support.apple.com/en-us/HT211944",
        "https://support.apple.com/en-us/HT211945",
        "https://support.apple.com/en-us/HT211946",
        "https://support.apple.com/en-us/HT211947",
        "http://packetstormsecurity.com/files/161296/XNU-Kernel-Mach-Message-Trailers-Memory-Disclosure.html",
        "http://seclists.org/fulldisclosure/2020/Dec/32",
        "https://support.apple.com/en-us/HT211928",
        "https://support.apple.com/en-us/HT211929",
        "https://support.apple.com/en-us/HT211931",
        "https://support.apple.com/en-us/HT211940",
        "https://support.apple.com/en-us/HT211944",
        "https://support.apple.com/en-us/HT211945",
        "https://support.apple.com/en-us/HT211946",
        "https://support.apple.com/en-us/HT211947",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-27950"
    ]
}