« Volver al listado

CVE-2026-88777

Estado: ModificadaAlta (8.8)—

Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.

This 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  leading to unpredictable or erroneous behavior or Denial of Service

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Citrix — Netscaler Application Delivery ControllerCitrix — Netscaler Gateway

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-88777",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-88777",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-29T15:07:18.195758Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 8.8,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
      "affectedData": [
        {
          "vendor": "Citrix NetScaler",
          "product": "ADC",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "14.1-73.37",
              "versionType": "patch"
            },
            {
              "status": "affected",
              "version": "0",
              "lessThan": "13.1-64.23",
              "versionType": "patch"
            },
            {
              "status": "affected",
              "version": "0",
              "lessThan": "14.1-73.37 FIPS",
              "versionType": "patch"
            },
            {
              "status": "affected",
              "version": "0",
              "lessThan": "13.1.37.279 FIPS and NDcPP",
              "versionType": "patch"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Citrix NetScaler",
          "product": "Gateway",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "14.1-73.37",
              "versionType": "patch"
            },
            {
              "status": "affected",
              "version": "0",
              "lessThan": "13.1-64.23",
              "versionType": "patch"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-27T17:16:56.990",
  "references": [
    {
      "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix_NetScaler_ADC_and_Citrix_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_88771_CVE_2026_88772_CVE_2026_88773_CVE_2026_88774_CVE_2026_88775_CVE_2026_88776_CVE_2026_88777_and_CVE_2026_88778",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Memory overflow vulnerability 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  leading to unpredictable or erroneous behavior or Denial of Service"
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de desbordamiento de memoria en Citrix NetScaler ADC y Citrix NetScaler Gateway.\n\nEste problema afecta a ADC: versiones anteriores a 14.1-73.37, anteriores a 13.1-64.23, anteriores a 14.1-73.37 FIPS, y anteriores a 13.1.37.279 FIPS y NDcPP; Gateway: versiones anteriores a 14.1-73.37 y anteriores a 13.1-64.23, lo que lleva a un comportamiento impredecible o erróneo o a una denegación de servicio."
    }
  ],
  "lastModified": "2026-09-29T22:19:03.363",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6BC2D462-9ABE-4024-8E46-8D265C0B19FB",
              "versionEndExcluding": "13.1-64.23",
              "versionStartIncluding": "13.1"
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2DB314FE-3886-4ABD-A820-B8A70EBB23A6",
              "versionEndExcluding": "13.1.37.279",
              "versionStartIncluding": "13.1"
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FCFFA1B3-87CE-4CC8-990E-D3CE0B55CD45",
              "versionEndExcluding": "13.1.37.279",
              "versionStartIncluding": "13.1"
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1CA9588A-E3EB-44FC-9515-6EB89BB8C1D6",
              "versionEndExcluding": "14.1-73.37",
              "versionStartIncluding": "14.1"
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "046FF602-D956-4961-89BF-2041A3590004",
              "versionEndIncluding": "14.1-73.37",
              "versionStartIncluding": "14.1-66.68"
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3286D2C3-EA7E-4D9C-95DE-05D462DC8B1B",
              "versionEndExcluding": "13.1-64.23",
              "versionStartIncluding": "13.1"
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C77243A7-1FDB-4557-88BE-EDF3BAA56A81",
              "versionEndExcluding": "14.1-73.37",
              "versionStartIncluding": "14.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5"
}