FKIE_CVE-2026-88775

Vulnerability from fkie_nvd - Published: 2026-09-27 17:16 - Updated: 2026-09-28 14:26
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Memory overflow 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 Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service
References
50a63c94-1ea7-4568-8c11-eb79e7c5a2b5https://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_88778Vendor Advisory
Impacted products
Vendor Product Version
citrix netscaler_application_delivery_controller *
citrix netscaler_application_delivery_controller *
citrix netscaler_application_delivery_controller *
citrix netscaler_application_delivery_controller *
citrix netscaler_application_delivery_controller *
citrix netscaler_gateway *
citrix netscaler_gateway *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "ADC",
          "vendor": "Citrix NetScaler",
          "versions": [
            {
              "lessThan": "14.1-73.37",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            },
            {
              "lessThan": "13.1-64.23",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            },
            {
              "lessThan": "14.1-73.37 FIPS",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            },
            {
              "lessThan": "13.1.37.279 FIPS and NDcPP",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Gateway",
          "vendor": "Citrix NetScaler",
          "versions": [
            {
              "lessThan": "14.1-73.37",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            },
            {
              "lessThan": "13.1-64.23",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            }
          ]
        }
      ],
      "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "6BC2D462-9ABE-4024-8E46-8D265C0B19FB",
              "versionEndExcluding": "13.1-64.23",
              "versionStartIncluding": "13.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
              "matchCriteriaId": "2DB314FE-3886-4ABD-A820-B8A70EBB23A6",
              "versionEndExcluding": "13.1.37.279",
              "versionStartIncluding": "13.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*",
              "matchCriteriaId": "FCFFA1B3-87CE-4CC8-990E-D3CE0B55CD45",
              "versionEndExcluding": "13.1.37.279",
              "versionStartIncluding": "13.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*",
              "matchCriteriaId": "1CA9588A-E3EB-44FC-9515-6EB89BB8C1D6",
              "versionEndExcluding": "14.1-73.37",
              "versionStartIncluding": "14.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*",
              "matchCriteriaId": "046FF602-D956-4961-89BF-2041A3590004",
              "versionEndIncluding": "14.1-73.37",
              "versionStartIncluding": "14.1-66.68",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3286D2C3-EA7E-4D9C-95DE-05D462DC8B1B",
              "versionEndExcluding": "13.1-64.23",
              "versionStartIncluding": "13.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C77243A7-1FDB-4557-88BE-EDF3BAA56A81",
              "versionEndExcluding": "14.1-73.37",
              "versionStartIncluding": "14.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Memory overflow 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\u00a0Memory overflow vulnerability 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: 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: anteriores a 14.1-73.37 y anteriores a 13.1-64.23, lo que provoca una vulnerabilidad de desbordamiento de memoria que conduce a un comportamiento impredecible o err\u00f3neo o a una denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2026-88775",
  "lastModified": "2026-09-28T14:26:21.610",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-27T17:16:56.750",
  "references": [
    {
      "source": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096\u0026articleTitle=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"
    }
  ],
  "sourceIdentifier": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.