{"id":"CVE-2026-8451","aliases":["EUVD-2026-40305","GHSA-6659-v5cc-894x"],"status":"published","title":"Insufficient input validation leading to memory overread","description":"Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP","severity":{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.1424,"percentile":0.9662,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-125"],"published":"2026-06-30T12:33:08Z","modified":"2026-07-01T18:31:24Z","exploits":[{"source":"pocgithub","id":"derekpreston81/CVE_ADC_IOC_2026","title":"derekpreston81/CVE_ADC_IOC_2026","date":"2026-06-30","url":"https://github.com/derekpreston81/CVE_ADC_IOC_2026"},{"source":"pocgithub","id":"watchtowrlabs/watchTowr-vs-Netscaler-CVE-2026-8451","title":"watchtowrlabs/watchTowr-vs-Netscaler-CVE-2026-8451","date":"2026-06-30","url":"https://github.com/watchtowrlabs/watchTowr-vs-Netscaler-CVE-2026-8451"},{"source":"pocgithub","id":"attarwahyup/Netscaler-CVE-2026-8451","title":"attarwahyup/Netscaler-CVE-2026-8451","date":"2026-07-02","url":"https://github.com/attarwahyup/Netscaler-CVE-2026-8451"},{"source":"pocgithub","id":"ashrafzaryouh/CVE-2026-8451","title":"ashrafzaryouh/CVE-2026-8451","date":"2026-07-03","url":"https://github.com/ashrafzaryouh/CVE-2026-8451"}],"products":[{"vendor":"citrix","product":"netscaler_application_delivery_controller"},{"vendor":"citrix","product":"netscaler_gateway"},{"vendor":"netscaler","product":"adc"},{"vendor":"netscaler","product":"gateway"}],"references":[{"url":"https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8451"},{"url":"https://github.com/advisories/GHSA-6659-v5cc-894x"}],"sources":{"cve":[{"id":"CVE-2026-8451","title":"Insufficient input validation leading to memory overread","description":"Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP","status":"published","published":"2026-06-30T12:33:08.999Z","modified":"2026-06-30T13:43:41.903Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T13:48:02.226896Z"}],"euvd":[{"id":"EUVD-2026-40305","description":"Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP","status":"published","published":"2026-06-30T12:33:08Z","modified":"2026-06-30T13:43:41Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:20:21.627235Z"}],"ghsa":[{"id":"GHSA-6659-v5cc-894x","title":"Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread...","description":"Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP","status":"published","published":"2026-06-30T15:30:45Z","modified":"2026-07-01T18:31:24Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:09:09.018372Z"}],"nvd":[{"id":"CVE-2026-8451","description":"Insufficient input validation in NetScaler ADC and NetScaler Gateway leading to memory overread if NetScaler ADC or NetScaler Gateway is configured as a SAML IDP","status":"published","published":"2026-06-30T13:19:33.347Z","modified":"2026-07-01T15:52:58.8Z","cvss":[{"version":"4.0","score":8.8,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:12:26.508751Z"}]}}