{"id":"CVE-2026-88776","aliases":["EUVD-2026-87971","GHSA-whfq-j52q-fpq7"],"status":"published","title":"Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service","description":"Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\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 unpredictable or erroneous behavior or Denial of Service","severity":{"version":"4.0","score":8.8,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00834,"percentile":0.58108,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-119"],"published":"2026-09-27T16:36:40Z","modified":"2026-09-29T17:17:11Z","exploits":[{"source":"pocgithub","id":"CompleteTech-Security/netscaler-cve-2026-88776-check","title":"CompleteTech-Security/netscaler-cve-2026-88776-check","date":"2026-10-23","url":"https://github.com/CompleteTech-Security/netscaler-cve-2026-88776-check"},{"source":"pocgithub","id":"Scyrix-LLC/CVE-2026-88776","title":"Scyrix-LLC/CVE-2026-88776","date":"2026-10-09","url":"https://github.com/Scyrix-LLC/CVE-2026-88776"}],"products":[{"vendor":"citrix","product":"netscaler_application_delivery_controller"},{"vendor":"citrix","product":"netscaler_gateway"},{"vendor":"citrix netscaler","product":"adc"},{"vendor":"citrix netscaler","product":"gateway"},{"vendor":"netscaler","product":"adc"},{"vendor":"netscaler","product":"gateway"}],"references":[{"url":"https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88776"},{"url":"https://github.com/advisories/GHSA-whfq-j52q-fpq7"}],"sources":{"cve":[{"id":"CVE-2026-88776","title":"Memory overflow vulnerability leading to unpredictable or erroneous behavior or Denial of Service","description":"Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\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 unpredictable or erroneous behavior or Denial of Service","status":"published","published":"2026-09-27T16:36:40.034Z","modified":"2026-09-29T16:06:45.542Z","cvss":[{"version":"4.0","score":8.8,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T13:42:04.39372Z"}],"euvd":[{"id":"EUVD-2026-87971","description":"Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\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 unpredictable or erroneous behavior or Denial of Service","status":"published","published":"2026-09-27T16:36:40Z","modified":"2026-09-29T16:06:45Z","cvss":[{"version":"4.0","score":8.8,"vector":"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","level":"high"}],"updated_at":"2026-11-02T17:27:51.995341Z"}],"ghsa":[{"id":"GHSA-whfq-j52q-fpq7","title":"Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway....","description":"Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\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 unpredictable or erroneous behavior or Denial of Service","status":"published","published":"2026-09-27T18:30:22Z","modified":"2026-09-28T18:31:19Z","cvss":[{"version":"4.0","score":8.8,"vector":"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/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","level":"high"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:12:32.639211Z"}],"nvd":[{"id":"CVE-2026-88776","description":"Memory overflow vulnerability vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway.\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 unpredictable or erroneous behavior or Denial of Service","status":"published","published":"2026-09-27T17:16:56.87Z","modified":"2026-09-29T17:17:11.85Z","cvss":[{"version":"4.0","score":8.8,"vector":"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/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","level":"high","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:12:52.081323Z"}]}}