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Advisory severityHigh8.8Juniper Networks Updated

High [CVE-2026-102069] Stack-based Buffer Overflow vulnerability in the dot1x daemon of Juniper Networks Junos OS devices operating as Junos Fusion Aggregation Devices allows an adjacent attacker acting as the configured ICCP peer to cause a denial of service and potentially execute code as root via

This high-severity Juniper Networks advisory covers CVE-2026-102069 affecting Junos OS.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-102069 Source published Source updated

VulniPulse record published Record updated

CVE-2026-102069
Affected products & platforms
Juniper NetworksJunos
Open source advisory

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Summary

A Stack-based Buffer Overflow vulnerability in the dot1x daemon of Juniper Networks Junos OS devices operating as Junos Fusion Aggregation Devices allows an adjacent attacker acting as the configured ICCP peer to cause a denial of service and potentially execute code as root

The issue is triggered when dot1x synchronization is enabled for the required Fusion satellite topology.

Affected versions
  • Junos OS before 23.2R2-S7.7
  • Junos OS 23.4 before 23.4R2-S8.13
  • Junos OS 24.2 before 24.2R2-S5.5
  • Junos OS 24.4 before 24.4R2-S5
  • Junos OS 25.2 before 25.2R2-S2
  • Junos OS 25.4 before 25.4R1-S3
  • Junos OS 26.2 before 26.2R1-S2

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Fixed versions
  • 23.2R2-S7.7
  • 23.4R2-S8.13
  • 24.2R2-S5.5
  • 24.4R2-S5
  • 25.2R2-S2
  • 25.4R1-S3
  • 26.2R1-S2

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Mitigation

Upgrade to a fixed release: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 7 days ago·verify at source

Discussion(0)

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