{
    "id": "CVE-2020-5135",
    "published": "2020-10-12 11:15:12",
    "last_modified": "2026-06-17 03:20:57",
    "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-120",
    "description": "A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall. This vulnerability affected SonicOS Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version 7.0.0.0.",
    "epss_score": "0.26869",
    "epss_percentile": "0.97970",
    "kev": 1,
    "kev_due": "2022-04-05",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:26:29",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-04-05."
    },
    "products": [
        {
            "vendor": "sonicwall",
            "product": "sonicos"
        },
        {
            "vendor": "sonicwall",
            "product": "sonicosv"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2020-5135",
        "date_added": "2022-03-15",
        "due_date": "2022-04-05",
        "vendor": "SonicWall",
        "product": "SonicOS",
        "name": "SonicWall SonicOS Buffer Overflow Vulnerability",
        "ransomware": 1
    },
    "exploits": [],
    "refs_list": [
        "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0010",
        "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2020-0010",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-5135"
    ]
}