{"id":"CVE-2026-102080","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102080","generatedAt":"2026-10-28T03:39:26.111Z","title":"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).","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.","published":"2026-10-14T17:18:04.000Z","lastModified":"2026-10-15T16:24:19.000Z","status":"Awaiting Analysis","sourceIdentifier":"sirt@juniper.net","cvss":{"version":"4.0","score":6,"severity":"MEDIUM","vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-413"],"affected":[],"epss":{"score":0.00183,"percentile":0.07811,"date":"2026-10-27","history":[{"date":"2026-10-15","score":0.00183,"percentile":0.07337}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-14T17:18:04.000Z","detail":{"score":"6.0","severity":"MEDIUM","publishedAt":"2026-10-14T17:18:03.703Z"},"summary":"New CVE, medium severity (CVSS 6.0)."}],"references":[{"url":"https://supportportal.juniper.net/JSA112178","source":"sirt@juniper.net"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102080","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}