{"schema":"threatline.record/2","record":{"id":"CVE-2026-102080","aliases":[],"summary":"Junos OS: MX Series: Malformed SyncE or PTP clock input causes continuous RE switchover","details":"An Improper Resource Locking vulnerability in the clock synchronization daemon (clksyncd) of Juniper Networks Junos OS on MX Series allows a unauthenticated, logically adjacent attacker to cause a Denial-of-Service (DoS).\n\n\n\nIf a SyncE or PTP upstream node sends a malformed message to an MX device equipped with SCBE3, a false 19.44MHz alarm is generated on the master RE. This leads to persistent RE switchovers and a clksyncd process crash. This issue is outside the attacker's direct control as it's a race condition.\n\nThis issue affects Junos OS on MX Series:\n\n\n  *  All versions before 23.2R2-S7.7;\n  *  23.4 versions before 23.4R2-S8.13;\n  *  24.2 versions before 24.2R2-S5.5;\n  *  24.4 versions before 24.4R2-S4;\n  *  25.2 versions before 25.2R2-S1;\n  *  25.4 versions before 25.4R1-S2.","categories":["Network & edge"],"product":"Junos OS","vendor":"Juniper Networks","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102080","source_modified_at":"2026-10-14T20:26:05.796Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"23.2R2-S7.7","status":"affected","version":"0","versionType":"custom"},{"lessThan":"23.4R2-S8.13","status":"affected","version":"23.4","versionType":"custom"},{"lessThan":"24.2R2-S5.5","status":"affected","version":"24.2","versionType":"custom"},{"lessThan":"24.4R2-S4","status":"affected","version":"24.4","versionType":"custom"},{"lessThan":"25.2R2-S1","status":"affected","version":"25.2","versionType":"custom"},{"lessThan":"25.4R1-S2","status":"affected","version":"25.4","versionType":"custom"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102080","source_modified_at":"2026-10-14T20:26:05.796Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"Junos OS","ecosystem":null},"version":"23.2R2-S7.7","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102080","source_modified_at":"2026-10-14T20:26:05.796Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"Junos OS","ecosystem":null},"version":"23.4R2-S8.13","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102080","source_modified_at":"2026-10-14T20:26:05.796Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"Junos OS","ecosystem":null},"version":"24.2R2-S5.5","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102080","source_modified_at":"2026-10-14T20:26:05.796Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"Junos OS","ecosystem":null},"version":"24.4R2-S4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102080","source_modified_at":"2026-10-14T20:26:05.796Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"Junos OS","ecosystem":null},"version":"25.2R2-S1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102080","source_modified_at":"2026-10-14T20:26:05.796Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"Junos OS","ecosystem":null},"version":"25.4R1-S2","basis":"first unaffected version stated in the CVE record"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00183,"percentile":0.07485,"score_date":"2026-10-23"},"published_at":"2026-10-14T16:26:30.073Z","modified_at":"2026-10-14T20:26:05.796Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102080","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T20:26:05.796Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102080","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://supportportal.juniper.net/JSA112178","tags":["vendor-advisory"]}],"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":"2026-10-14T20:16:08.413694Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-14T20:26:05.796Z","content_hash":"d0397575261a531b3b5ceeecd50647a498d381f7df62166d339d550d73bc44a3"}}