{"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.<p>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&nbsp;<span>an unauthenticated attacker to execute arbitrary commands.&nbsp;</span></p>"}]}],"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"}}]}}