{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-88771", "assignerOrgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5", "state": "PUBLISHED", "assignerShortName": "NetScaler", "dateReserved": "2026-09-10T07:14:57.369Z", "datePublished": "2026-09-27T16:02:07.001Z", "dateUpdated": "2026-09-29T03:55:15.090Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "50a63c94-1ea7-4568-8c11-eb79e7c5a2b5", "shortName": "NetScaler", "dateUpdated": "2026-09-27T16:02:07.001Z" }, "title": "A remote code execution vulnerability exists due to improper input validation, which can allow an unauthenticated attacker to execute arbitrary commands", "datePublic": "2026-09-27T15:51:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-20", "description": "CWE-20 Improper input validation", "type": "CWE" } ] } ], "affected": [ { "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" } ], "descriptions": [ { "lang": "en", "value": "Improper input validation 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 an unauthenticated attacker to execute arbitrary commands.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "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. 

" } ] } ], "references": [ { "url": "https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.5, "vectorString": "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" } } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 1.0.4" } }, "adp": [ { "references": [ { "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88771", "tags": [ "government-resource" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-27T00:00:00+00:00", "options": [ { "Exploitation": "active" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-88771" } } }, { "other": { "type": "kev", "content": { "dateAdded": "2026-09-27", "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-88771" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-29T03:55:15.090Z" } } ] } }