{"id":"CVE-2026-102080","published":"2026-10-14T17:18:03.703","lastModified":"2026-10-15T16:24:19.073","description":"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.","cvssScore":5.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-413"],"vendors":[],"products":[],"references":[{"url":"https://supportportal.juniper.net/JSA112178","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}