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Vulnerability Detail

CVE-2026-102080 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Severity
Medium
Score / CVSS
5.3
Creation Date
18h ago
Vendor
Juniper Networks
Product
Junos OS
Attack Type
CWE-413 Improper Resource Locking
Vector String
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Complexity
HIGH

Narrative and Response

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). 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.

Executive Summary

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Technical Details

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Mitigations

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References

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Additional Metadata

{
  "score": "5.3",
  "pubDate": "2026-10-14T17:18:03.703Z",
  "pubdate": "2026-10-14T17:18:03.703Z"
}
CVE-2026-102080: CVE-2026-102080 Vulnerability (MEDIUM Severity, CVSS: 5.3) | Sceawere