{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2022-0910",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-0910",
    "idYear": 2022,
    "status": "PUBLISHED",
    "publishedAt": "2022-05-24T02:20:13.000Z",
    "updatedAt": "2024-08-02T23:47:42.905Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": null,
      "summary": "A downgrade from two-factor authentication to one-factor authentication vulnerability in the CGI program of Zyxel USG/ZyWALL series firmware versions 4.32 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, and VPN series firmware versions 4.32 through 5.21, that could allow an authenticated attacker to bypass the second authentication phase to connect the IPsec VPN server even though the two-factor authentication (2FA) was enabled.",
      "affected": [
        {
          "vendor": "Zyxel",
          "product": "USG/ZyWALL series firmware",
          "versions": [
            {
              "version": "4.32 through 4.71",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Zyxel",
          "product": "USG FLEX series firmware",
          "versions": [
            {
              "version": "4.50 through 5.21",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Zyxel",
          "product": "ATP series firmware",
          "versions": [
            {
              "version": "4.32 through 5.21",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Zyxel",
          "product": "VPN series firmware",
          "versions": [
            {
              "version": "4.32 through 5.21",
              "status": "affected"
            }
          ]
        }
      ]
    }
  }
}