CVE-2026-102080

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This leads to persistent RE switchovers and a clksyncd process crash. This issue is outside the attacker's direct control as it's a&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">race condition.</span><br><br><p>This issue affects Junos OS on MX Series:<br></p><ul><li>All versions before 23.2R2-S7.7;</li><li>23.4 versions before 23.4R2-S8.13;</li><li>24.2 versions before 24.2R2-S5.5;</li><li>24.4 versions before 24.4R2-S4;</li><li>25.2 versions before 25.2R2-S1;</li><li>25.4 versions before 25.4R1-S2.</li></ul><br><p></p>"}], "value": "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. 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This leads to persistent RE switchovers and a clksyncd process crash. This issue is outside the attacker's direct control as it's a\u00a0race 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.", "supportingMedia": [{"type": "text/html", "value": "<span style=\"background-color: rgb(255, 255, 255);\">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).</span><br>\n\n<br>If 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. 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{}

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