{
  "id": "cve-2023-28771",
  "cveID": "CVE-2023-28771",
  "vendor": "Zyxel",
  "product": "Multiple Firewalls",
  "vulnerabilityName": "Zyxel Multiple Firewalls OS Command Injection Vulnerability",
  "shortDescription": "Zyxel ATP, USG FLEX, VPN, and ZyWALL/USG firewalls allow for improper error message handling which could allow an unauthenticated attacker to execute OS commands remotely by sending crafted packets to an affected device.",
  "requiredAction": "Apply updates per vendor instructions.",
  "dateAdded": "2023-05-31",
  "dueDate": "2023-06-21",
  "knownRansomware": false,
  "cwes": [
    "CWE-78"
  ],
  "notes": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls;   https://nvd.nist.gov/vuln/detail/CVE-2023-28771",
  "sources": [
    {
      "label": "NVD",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28771"
    },
    {
      "label": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    },
    {
      "label": "zyxel.com",
      "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-remote-command-injection-vulnerability-of-firewalls"
    },
    {
      "label": "nvd.nist.gov",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28771"
    }
  ],
  "cvss": {
    "score": 9.8,
    "severity": "CRITICAL",
    "version": "3.1",
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  },
  "epss": {
    "score": 0.99284,
    "percentile": 0.99936
  },
  "timeline": [
    {
      "date": "2023-05-31",
      "event": "Added to the CISA KEV catalog"
    },
    {
      "date": "2023-06-21",
      "event": "CISA remediation due date (BOD 22-01)"
    }
  ],
  "status": "past due"
}