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CVE-2026-88778 (GCVE-0-2026-88778)

Vulnerability from nvd – Published: 2026-09-27 16:43 – Updated: 2026-09-27 16:43

Title

TCP Initial Sequence Number (ISN) prediction

Summary

Predictable exact value from previous values 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.

Severity

8.8 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L

CWE

CWE-342 - Predictable exact value from previous values

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (Patch) Affected: 0 , < 13.1-64.23 (Patch) Affected: 0 , < 14.1-73.37 FIPS (Patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (Patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (Patch) Affected: 0 , < 13.1-64.23 (Patch)

Date Public

2026-09-27 15:30

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
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          "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"
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          ]
        }
      ],
      "datePublic": "2026-09-27T15:30:00.000Z",
      "descriptions": [
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          "lang": "en",
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        }
      ],
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            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-342",
              "description": "CWE-342 Predictable exact value from previous values",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
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        "dateUpdated": "2026-09-27T16:43:16.503Z",
        "orgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
        "shortName": "NetScaler"
      },
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        {
          "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "TCP Initial Sequence Number (ISN) prediction",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
    "assignerShortName": "NetScaler",
    "cveId": "CVE-2026-88778",
    "datePublished": "2026-09-27T16:43:16.503Z",
    "dateReserved": "2026-09-10T07:14:57.370Z",
    "dateUpdated": "2026-09-27T16:43:16.503Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

CVE-2026-88777 (GCVE-0-2026-88777)

Vulnerability from nvd – Published: 2026-09-27 16:37 – Updated: 2026-09-27 16:37

Title

Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

Summary

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

Severity

8.8 (High)


                        
                          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

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
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              "lessThan": "13.1.37.279 FIPS and NDcPP",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            }
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          "defaultStatus": "unaffected",
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          "vendor": "Citrix NetScaler",
          "versions": [
            {
              "lessThan": "14.1-73.37",
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              "versionType": "patch"
            },
            {
              "lessThan": "13.1-64.23",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
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              "value": "Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\u003cp\u003eThis 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\u0026nbsp;\u003cspan\u003e\u0026nbsp;leading to unpredictable or erroneous behavior or Denial of Service\u003c/span\u003e\u003c/p\u003e"
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        }
      ],
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            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "exploitMaturity": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-27T16:37:44.345Z",
        "orgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
        "shortName": "NetScaler"
      },
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        {
          "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"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service",
      "x_generator": {
        "engine": "Vulnogram 1.0.4"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
    "assignerShortName": "NetScaler",
    "cveId": "CVE-2026-88777",
    "datePublished": "2026-09-27T16:37:44.345Z",
    "dateReserved": "2026-09-10T07:14:57.370Z",
    "dateUpdated": "2026-09-27T16:37:44.345Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-88776 (GCVE-0-2026-88776)

Vulnerability from nvd – Published: 2026-09-27 16:36 – Updated: 2026-09-27 16:36

Title

Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

Summary

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

Severity

8.8 (High)


                        
                          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

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Date Public

2026-09-27 15:30

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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",
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              "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",
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              "versionType": "patch"
            },
            {
              "lessThan": "13.1-64.23",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            }
          ]
        }
      ],
      "datePublic": "2026-09-27T15:30:00.000Z",
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\u003cbr\u003eThis 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\u0026nbsp;\u0026nbsp;leading to unpredictable or erroneous behavior or Denial of Service"
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "exploitMaturity": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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      "providerMetadata": {
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          "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096"
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        "discovery": "UNKNOWN"
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    "assignerShortName": "NetScaler",
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    "dateReserved": "2026-09-10T07:14:57.369Z",
    "dateUpdated": "2026-09-27T16:36:40.034Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

CVE-2026-88775 (GCVE-0-2026-88775)

Vulnerability from nvd – Published: 2026-09-27 16:21 – Updated: 2026-09-27 16:38

Title

Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

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

Severity

8.8 (High)


                        
                          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

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "ADC",
          "vendor": "Citrix NetScaler",
          "versions": [
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              "lessThan": "14.1-73.37",
              "status": "affected",
              "version": "0",
              "versionType": "patch"
            },
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              "lessThan": "13.1-64.23",
              "status": "affected",
              "version": "0",
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            },
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        }
      ],
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            "Safety": "NOT_DEFINED",
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            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
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            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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CVE-2026-88774 (GCVE-0-2026-88774)

Vulnerability from nvd – Published: 2026-09-27 16:14 – Updated: 2026-09-27 16:14

Title

Feature policy bypass due to improper HTTP URL based expression usage

Summary

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 a feature policy bypass due to improper HTTP URL based expression usage.

Severity

7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Show details on NVD website

JSON

To clipboard

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CVE-2026-88773 (GCVE-0-2026-88773)

Vulnerability from nvd – Published: 2026-09-27 16:20 – Updated: 2026-09-27 16:20

Title

HTTP Request Smuggling

Summary

Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') 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 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.

Severity

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N

CWE

CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (Patch) Affected: 0 , < 13.1-64.23 (Patch) Affected: 0 , < 14.1-73.37 FIPS (Patch) Affected: 0 , < 13.1-37.279 and NDcPP (Patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 FIPS (Patch) Affected: 0 , < 13.1-64.23 (Patch)

Date Public

2026-09-27 15:30

Show details on NVD website

JSON

To clipboard

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CVE-2026-88772 (GCVE-0-2026-88772)

Vulnerability from nvd – Published: 2026-09-27 16:09 – Updated: 2026-09-28 03:55

CISA CIRCL ENISA

Title

Memory overflow vulnerability leading to Remote Code Execution or Denial of Service

Summary

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 Remote Code Execution or Denial of Service

Severity

9.5 (Critical)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-27 00:00 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

NetScaler mitre root

References

2 references

URL	Tags
https://support.citrix.com/support-home/kbsearch/…
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Show details on NVD website

JSON

To clipboard

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CVE-2026-88771 (GCVE-0-2026-88771)

Vulnerability from nvd – Published: 2026-09-27 16:02 – Updated: 2026-09-28 12:43

CISA CIRCL ENISA

Title

A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands

Summary

Improper input validation 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 an unauthenticated attacker to execute arbitrary commands.

Severity

9.5 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-28 12:43 UTC

CWE

CWE-20 - Improper input validation

Assigner

NetScaler mitre root

References

2 references

URL	Tags
https://support.citrix.com/support-home/kbsearch/…
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Date Public

2026-09-27 15:51

Show details on NVD website

JSON

To clipboard

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CVE-2026-88778 (GCVE-0-2026-88778)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:43 – Updated: 2026-09-27 16:43

Title

TCP Initial Sequence Number (ISN) prediction

Summary

Predictable exact value from previous values 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.

Severity

8.8 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L

CWE

CWE-342 - Predictable exact value from previous values

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (Patch) Affected: 0 , < 13.1-64.23 (Patch) Affected: 0 , < 14.1-73.37 FIPS (Patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (Patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (Patch) Affected: 0 , < 13.1-64.23 (Patch)

Date Public

2026-09-27 15:30

Show details on NVD website

JSON

To clipboard

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CVE-2026-88777 (GCVE-0-2026-88777)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:37 – Updated: 2026-09-27 16:37

Title

Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

Summary

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

Severity

8.8 (High)


                        
                          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

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Show details on NVD website

JSON

To clipboard

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CVE-2026-88776 (GCVE-0-2026-88776)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:36 – Updated: 2026-09-27 16:36

Title

Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

Summary

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

Severity

8.8 (High)


                        
                          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

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Date Public

2026-09-27 15:30

Show details on NVD website

JSON

To clipboard

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    "cna": {
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          "defaultStatus": "unaffected",
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CVE-2026-88775 (GCVE-0-2026-88775)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:21 – Updated: 2026-09-27 16:38

Title

Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service

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

Severity

8.8 (High)


                        
                          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

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Show details on NVD website

JSON

To clipboard

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CVE-2026-88773 (GCVE-0-2026-88773)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:20 – Updated: 2026-09-27 16:20

Title

HTTP Request Smuggling

Summary

Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling') 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 and NDcPP; Gateway: before 14.1-73.37 FIPS and before 13.1-64.23.

Severity

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N

CWE

CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (Patch) Affected: 0 , < 13.1-64.23 (Patch) Affected: 0 , < 14.1-73.37 FIPS (Patch) Affected: 0 , < 13.1-37.279 and NDcPP (Patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 FIPS (Patch) Affected: 0 , < 13.1-64.23 (Patch)

Date Public

2026-09-27 15:30

Show details on NVD website

JSON

To clipboard

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CVE-2026-88774 (GCVE-0-2026-88774)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:14 – Updated: 2026-09-27 16:14

Title

Feature policy bypass due to improper HTTP URL based expression usage

Summary

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 a feature policy bypass due to improper HTTP URL based expression usage.

Severity

7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N

Assigner

NetScaler mitre root

References

1 reference

URL	Tags
https://support.citrix.com/support-home/kbsearch/…

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Show details on NVD website

JSON

To clipboard

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CVE-2026-88772 (GCVE-0-2026-88772)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:09 – Updated: 2026-09-28 03:55

CISA CIRCL ENISA

Title

Memory overflow vulnerability leading to Remote Code Execution or Denial of Service

Summary

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 Remote Code Execution or Denial of Service

Severity

9.5 (Critical)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-27 00:00 UTC

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

NetScaler mitre root

References

2 references

URL	Tags
https://support.citrix.com/support-home/kbsearch/…
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Show details on NVD website

JSON

To clipboard

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CVE-2026-88771 (GCVE-0-2026-88771)

Vulnerability from cvelistv5 – Published: 2026-09-27 16:02 – Updated: 2026-09-28 12:43

CISA CIRCL ENISA

Title

A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands

Summary

Improper input validation 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 an unauthenticated attacker to execute arbitrary commands.

Severity

9.5 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-28 12:43 UTC

CWE

CWE-20 - Improper input validation

Assigner

NetScaler mitre root

References

2 references

URL	Tags
https://support.citrix.com/support-home/kbsearch/…
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

2 products

Vendor	Product	Version
Citrix NetScaler	ADC	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch) Affected: 0 , < 14.1-73.37 FIPS (patch) Affected: 0 , < 13.1.37.279 FIPS and NDcPP (patch)
Citrix NetScaler	Gateway	Affected: 0 , < 14.1-73.37 (patch) Affected: 0 , < 13.1-64.23 (patch)

Date Public

2026-09-27 15:51

Show details on NVD website

JSON

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16 vulnerabilities by Citrix NetScaler

CVE-2026-88778 (GCVE-0-2026-88778)

CVE-2026-88777 (GCVE-0-2026-88777)

CVE-2026-88776 (GCVE-0-2026-88776)

CVE-2026-88775 (GCVE-0-2026-88775)

CVE-2026-88774 (GCVE-0-2026-88774)

CVE-2026-88773 (GCVE-0-2026-88773)

CVE-2026-88772 (GCVE-0-2026-88772)

CVE-2026-88771 (GCVE-0-2026-88771)

CVE-2026-88778 (GCVE-0-2026-88778)

CVE-2026-88777 (GCVE-0-2026-88777)

CVE-2026-88776 (GCVE-0-2026-88776)

CVE-2026-88775 (GCVE-0-2026-88775)

CVE-2026-88773 (GCVE-0-2026-88773)

CVE-2026-88774 (GCVE-0-2026-88774)

CVE-2026-88772 (GCVE-0-2026-88772)

CVE-2026-88771 (GCVE-0-2026-88771)

Find a vulnerability

Search criteria ⓘ Use this form to refine search results. Full-text search supports keyword queries with ranking and filtering. You can combine vendor, product, and sources to narrow results. Enable “Apply ordering” to sort by date instead of relevance.

16 vulnerabilities by Citrix NetScaler

CVE-2026-88778 (GCVE-0-2026-88778)

CVE-2026-88777 (GCVE-0-2026-88777)

CVE-2026-88776 (GCVE-0-2026-88776)

CVE-2026-88775 (GCVE-0-2026-88775)

CVE-2026-88774 (GCVE-0-2026-88774)

CVE-2026-88773 (GCVE-0-2026-88773)

CVE-2026-88772 (GCVE-0-2026-88772)

CVE-2026-88771 (GCVE-0-2026-88771)

CVE-2026-88778 (GCVE-0-2026-88778)

CVE-2026-88777 (GCVE-0-2026-88777)

CVE-2026-88776 (GCVE-0-2026-88776)

CVE-2026-88775 (GCVE-0-2026-88775)

CVE-2026-88773 (GCVE-0-2026-88773)

CVE-2026-88774 (GCVE-0-2026-88774)

CVE-2026-88772 (GCVE-0-2026-88772)

CVE-2026-88771 (GCVE-0-2026-88771)

Search criteria ⓘ Use this form to refine search results.
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