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Advisory severityMedium6.5Juniper Networks Updated

Medium [CVE-2026-102063] Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos on MX Series routers allows an unauthenticated network attacker to cause a denial of service via an eBGP route update when HFRR link protection is configured in a VRF

This medium-severity Juniper Networks advisory covers CVE-2026-102063 affecting Junos OS.

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

CVE-2026-102063 Source published Source updated

VulniPulse record published Record updated

CVE-2026-102063
Affected products & platforms
Juniper NetworksJunos
Open source advisory

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Summary

A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos on MX Series routers allows an unauthenticated network attacker to cause a denial of service via an eBGP route update when HFRR link protection is configured in a VRF.

Affected products named by the advisory: MX.

Affected product named by the advisory: Junos OS.

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 checklist

Recommended fix / mitigation
  • A Reachable Assertion vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos on MX Series routers allows an unauthenticated network attacker to cause a denial of service via an eBGP route update when HFRR link protection is configured in a VRF.

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

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