{
  "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-2026-88778",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-88778",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-27T16:43:16.503Z",
    "updatedAt": "2026-09-29T16:35:06.769Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "TCP Initial Sequence Number (ISN) prediction",
      "summary": "Predictable exact value from previous values vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23.",
      "affected": [
        {
          "vendor": "Citrix NetScaler",
          "product": "ADC",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "Patch",
              "lessThan": "14.1-73.37"
            },
            {
              "version": "0",
              "status": "affected",
              "versionType": "Patch",
              "lessThan": "13.1-64.23"
            },
            {
              "version": "0",
              "status": "affected",
              "versionType": "Patch",
              "lessThan": "14.1-73.37 FIPS"
            },
            {
              "version": "0",
              "status": "affected",
              "versionType": "Patch",
              "lessThan": "13.1.37.279 FIPS and NDcPP"
            }
          ]
        },
        {
          "vendor": "Citrix NetScaler",
          "product": "Gateway",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "Patch",
              "lessThan": "14.1-73.37"
            },
            {
              "version": "0",
              "status": "affected",
              "versionType": "Patch",
              "lessThan": "13.1-64.23"
            }
          ]
        }
      ]
    }
  }
}