CVE-2026-88779 (GCVE-0-2026-88779)
Vulnerability from cvelistv5
Published
2026-10-04 02:35
Modified
2026-10-05 03:55
Summary
Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.
Impacted products
Vendor Product Version
NetScaler ADC Version: 0
Version: 0
Version: 0
Version: 0
Create a notification for this product.
CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog

Date added: 2026-10-04

Due date: 2026-10-07

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Used in ransomware: Unknown

Notes: https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174 ; https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-88779

Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-88779",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-04T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2026-10-04",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88779"
              },
              "type": "kev"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-119",
                "description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-05T03:55:38.096Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "vendor-advisory"
            ],
            "url": "https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/"
          },
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88779"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2026-10-04T00:00:00.000Z",
            "value": "CVE-2026-88779 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "ADC",
          "vendor": "NetScaler",
          "versions": [
            {
              "lessThan": "14.1-73.41",
              "status": "affected",
              "version": "0",
              "versionType": "Patch"
            },
            {
              "lessThan": "13.1-64.28",
              "status": "affected",
              "version": "0",
              "versionType": "Patch"
            },
            {
              "lessThan": "14.1-73.41 FIPS",
              "status": "affected",
              "version": "0",
              "versionType": "Patch"
            },
            {
              "lessThan": "13.1-37.282",
              "status": "affected",
              "version": "0",
              "versionType": "Patch"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Gateway",
          "vendor": "NetScaler",
          "versions": [
            {
              "lessThan": "14.1-73.41",
              "status": "affected",
              "version": "0",
              "versionType": "Patch"
            },
            {
              "lessThan": "13.1-64.28",
              "status": "affected",
              "version": "0",
              "versionType": "Patch"
            }
          ]
        }
      ],
      "datePublic": "2026-10-04T02:19:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Vulnerability in NetScaler ADC and NetScaler Gateway.\u003cp\u003eThis issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.\u003c/p\u003e"
            }
          ],
          "value": "Vulnerability in NetScaler ADC and NetScaler Gateway.\n\nThis issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "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:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-04T02:35:35.525Z",
        "orgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
        "shortName": "NetScaler"
      },
      "references": [
        {
          "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Memory overflow vulnerability  leading to Denial of Service",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5",
    "assignerShortName": "NetScaler",
    "cveId": "CVE-2026-88779",
    "datePublished": "2026-10-04T02:35:35.525Z",
    "dateReserved": "2026-09-10T07:14:57.370Z",
    "dateUpdated": "2026-10-05T03:55:38.096Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2026-88779",
      "cwes": "[\"CWE-119\"]",
      "dateAdded": "2026-10-04",
      "dueDate": "2026-10-07",
      "forensicTriage": "No",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174 ; https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-88779",
      "product": "NetScaler",
      "requiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA\u2019s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA\u2019s \u201cForensics Triage Requirements\u201d (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset\u0027s internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
      "shortDescription": "Citrix NetScaler ADC (formerly Citrix ADC) and Citrix NetScaler Gateway (formerly Citrix Gateway) contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for a denial of service.",
      "vendorProject": "Citrix",
      "vulnerabilityName": "Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-88779\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-04T19:34:09.964186Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2026-10-04\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88779\"}}}], \"references\": [{\"url\": \"https://community.citrix.com/techzone-blogs/110_security-updates/understanding-and-addressing-cve-2026-88779-in-citrix-netscaler-adc-and-citrix-netscaler-gateway/\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88779\", \"tags\": [\"government-resource\"]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-119\", \"description\": \"CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-04T14:41:01.831Z\"}, \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-10-04T00:00:00.000Z\", \"value\": \"CVE-2026-88779 added to CISA KEV\"}]}], \"cna\": {\"title\": \"Memory overflow vulnerability  leading to Denial of Service\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 8.7, \"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:N/VI:N/VA:H/SC:N/SI:N/SA:N\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"NetScaler\", \"product\": \"ADC\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"14.1-73.41\", \"versionType\": \"Patch\"}, {\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"13.1-64.28\", \"versionType\": \"Patch\"}, {\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"14.1-73.41 FIPS\", \"versionType\": \"Patch\"}, {\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"13.1-37.282\", \"versionType\": \"Patch\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"NetScaler\", \"product\": \"Gateway\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"14.1-73.41\", \"versionType\": \"Patch\"}, {\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"13.1-64.28\", \"versionType\": \"Patch\"}], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-10-04T02:19:00.000Z\", \"references\": [{\"url\": \"https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697174\"}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.5\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Vulnerability in NetScaler ADC and NetScaler Gateway.\\n\\nThis issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Vulnerability in NetScaler ADC and NetScaler Gateway.\u003cp\u003eThis issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.\u003c/p\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"50a63c94-1ea7-4568-8c11-eb79e7c5a2b5\", \"shortName\": \"NetScaler\", \"dateUpdated\": \"2026-10-04T02:35:35.525Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-88779\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-05T03:55:38.096Z\", \"dateReserved\": \"2026-09-10T07:14:57.370Z\", \"assignerOrgId\": \"50a63c94-1ea7-4568-8c11-eb79e7c5a2b5\", \"datePublished\": \"2026-10-04T02:35:35.525Z\", \"assignerShortName\": \"NetScaler\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


Loading…

Loading…