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Advisory severityMedium6.5Juniper Networks Updated

Medium [CVE-2026-102087] Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS)

This medium-severity Juniper Networks advisory covers CVE-2026-102087 affecting Junos OS, Junos OS Evolved.

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

CVE-2026-102087 Source published Source updated

VulniPulse record published Record updated

CVE-2026-102087
Affected products & platforms
Juniper NetworksJunosJunos OS Evolved
Open source advisory

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Summary

An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).

When in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.

This issue affects:

  • All versions before 23.2R2-S6;
  • 23.4 versions before 23.4R2-S7;
Affected versions
  • 23.4
  • 24.2
  • 24.4
  • 25.2

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

Fixed versions
  • 23.2R2-S6
  • 23.4R2-S7
  • 24.2R2-S4
  • 24.4R2-S4
  • 25.2R1-S2
  • 23.2R2-S6-EVO
  • 23.4R2-S8.11-EVO
  • 24.2R2-S4-EVO
  • 24.4R2-S5-EVO
  • 25.2R1-S2-EVO

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

Mitigation checklist

Recommended fix / mitigation
  • When in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.

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

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