{"schema":"threatline.record/2","record":{"id":"CVE-2026-88778","aliases":[],"summary":"TCP Initial Sequence Number (ISN) prediction","details":"Predictable exact value from previous values 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.","categories":["Network & edge"],"product":"ADC","vendor":"Citrix NetScaler","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88778","source_modified_at":"2026-09-29T16:35:06.769Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"ADC","vendor":"Citrix NetScaler","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"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88778","source_modified_at":"2026-09-29T16:35:06.769Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Gateway","vendor":"Citrix NetScaler","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"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88778","source_modified_at":"2026-09-29T16:35:06.769Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"ADC","ecosystem":null},"version":"14.1-73.37","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88778","source_modified_at":"2026-09-29T16:35:06.769Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"ADC","ecosystem":null},"version":"13.1-64.23","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88778","source_modified_at":"2026-09-29T16:35:06.769Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"ADC","ecosystem":null},"version":"14.1-73.37 FIPS","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88778","source_modified_at":"2026-09-29T16:35:06.769Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"ADC","ecosystem":null},"version":"13.1.37.279 FIPS and NDcPP","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88778","source_modified_at":"2026-09-29T16:35:06.769Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Gateway","ecosystem":null},"version":"14.1-73.37","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-88778","source_modified_at":"2026-09-29T16:35:06.769Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Gateway","ecosystem":null},"version":"13.1-64.23","basis":"first unaffected version stated in the CVE record"}],"cvss":8.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00379,"percentile":0.30673,"score_date":"2026-10-23"},"published_at":"2026-09-27T16:43:16.503Z","modified_at":"2026-09-29T16:35:06.769Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-88778","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-29T16:35:06.769Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-88778","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-09-29T16:34:20.349812Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-09-29T16:35:06.769Z","content_hash":"2cb7a5965e657bb9a0b2cc6d214142fcf6c1ad50467f57761a32917caaf1ed98"}}