PT-2026-113916 · Juniper Networks · Junos
CVE-2026-102080
·
Published
2026-10-14
·
Updated
2026-10-14
CVSS v3.1
5.3
Medium
| Vector | AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
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).
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. This issue is outside the attacker's direct control as it's a race condition.
This issue affects Junos OS on MX Series:
- All versions before 23.2R2-S7.7;
- 23.4 versions before 23.4R2-S8.13;
- 24.2 versions before 24.2R2-S5.5;
- 24.4 versions before 24.4R2-S4;
- 25.2 versions before 25.2R2-S1;
- 25.4 versions before 25.4R1-S2.
Fix
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Weakness Enumeration
Related Identifiers
Affected Products
Junos