{"schema":"threatline.record/2","record":{"id":"CVE-2026-53563","aliases":[],"summary":"Persistent Command Execution","details":"Vulnerability in Citrix UniconOS leading to Persistent Command Execution\n\nThis issue affects UniconOS: before 2607.2 CR and before 2603 LTSR CU2.","categories":["Network & edge"],"product":"UniconOS","vendor":"Citrix","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-53563","source_modified_at":"2026-10-14T18:26:05.074Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"UniconOS","vendor":"Citrix","versions":[{"status":"affected","version":"0","lessThan":"2607.2 CR","versionType":"patch"},{"status":"affected","version":"0","lessThan":"2603 LTSR CU2","versionType":"patch"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-53563","source_modified_at":"2026-10-14T18:26:05.074Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"UniconOS","ecosystem":null},"version":"2607.2 CR","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-53563","source_modified_at":"2026-10-14T18:26:05.074Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"UniconOS","ecosystem":null},"version":"2603 LTSR CU2","basis":"first unaffected version stated in the CVE record"}],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00215,"percentile":0.11296,"score_date":"2026-10-23"},"published_at":"2026-10-13T22:04:13.778Z","modified_at":"2026-10-14T18:26:05.074Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-53563","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T18:26:05.074Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-53563","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=CTX697187"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-14T18:25:44.402509Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-14T18:26:05.074Z","content_hash":"3b5c1b40261bb8c9b0de00a37aabfbbf29b49b54ac08b378882afc5e5f175a67"}}