{"schemaVersion":3,"id":"CVE-2026-107406","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Memory overflow vulnerability leading to Remote Code Execution or Denial of Service Vulnerability in NetScaler ADC.\n\n\nNetScaler ADC or NetScaler Gateway must be configured as a SAML SP or SAML IdP, subject to the following version-specific requirements:\n\n\n\n\n\n  *  For the following versions: Applicable only when configured as a SAML IdP:\n  *  NetScaler ADC and NetScaler Gateway between 14.1-73.37 and 14.1-73.41, inclusive\n  *  NetScaler ADC 14.1-FIPS between 14.1-73.37 FIPS and 14.1-73.41 FIPS, inclusive\n  *  NetScaler ADC and NetScaler Gateway between 13.1-64.23 and 13.1-64.28, inclusive\n  *  NetScaler ADC 13.1-FIPS between 13.1-NDcPP 13.1-37.279 and 13.1- 37.282, inclusive\n\n\n\n\n\n\n\n\nFor the following versions: Applicable only when configured as a SAML SP or SAML IdP:\n\n  *  NetScaler ADC and NetScaler Gateway before 14.1-73.37\n  *  NetScaler ADC 14.1-FIPS before 14.1-73.37 FIPS\n  *  NetScaler ADC and NetScaler Gateway before 13.1-64.23\n  *  NetScaler ADC 13.1-FIPS before13.1-NDcPP 13.1-37.279","dates":{"published":"2026-10-08T21:18:08.336Z","modified":"2026-10-10T03:55:21.152Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.5,"severity":"critical","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":9.5,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":9.5,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L/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","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00471,"percentile":0.39435,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-09T00:00:00.000Z","score":0.00414,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00471,"percentile":0.39435}],"last30":[{"date":"2026-10-09T00:00:00.000Z","score":0.00414,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00471,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00471,"percentile":0.39435}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer","description":"The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/119.html"}],"affected":[{"vendor":"netscaler","product":"adc","name":"ADC","label":"adc","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 14.1-73.46","noFixRecorded":false,"fixedIn":null},{"text":"< 13.1-64.29","noFixRecorded":false,"fixedIn":null},{"text":"< 14.1-73.46 FIPS","noFixRecorded":false,"fixedIn":null},{"text":"< 13.1.37.283 FIPS","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 14.1-73.46 | < 13.1-64.29 | < 14.1-73.46 FIPS | < 13.1.37.283 FIPS","eol":null,"hubHref":"/vendor/netscaler/adc"},{"vendor":"netscaler","product":"gateway","name":"Gateway","label":"gateway","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 14.1-73.46","noFixRecorded":false,"fixedIn":null},{"text":"< 13.1-64.29","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 14.1-73.46 | < 13.1-64.29","eol":null,"hubHref":"/vendor/netscaler/gateway"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697191","label":"support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697191","hostname":"support.citrix.com","tags":[]},{"url":"https://community.citrix.com/techzone-blogs/110_security-updates/protecting-customers-immediate-guidance-for-cve-2026-107406-in-netscaler-adc-and-netscaler-gateway-r1631/","label":"community.citrix.com/techzone-blogs/…","hostname":"community.citrix.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-08T21:18:08.336Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-10T03:55:21.152Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T08:28:32.083Z","stale":false,"partial":false}}