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CVE-2026-102071 Juniper Networks CVE debrief

A denial-of-service vulnerability exists in Juniper Networks Junos OS and Junos OS Evolved, which allows an unauthenticated adjacent attacker to cause a crash of the routing protocol daemon (rpd) via a specific RSVP packet when a bidirectional LSP is enabled. This vulnerability requires attention from network administrators and security teams to prevent potential service disruptions. The vulnerability exists in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved. An unauthenticated adjacent attacker can cause a denial of service by sending a specific RSVP packet when a bidirectional LSP is enabled. Network administrators should prioritize patching or

Vendor
Juniper Networks
Product
Junos OS
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-14
Original CVE updated
2026-10-14
Advisory published
2026-10-14
Advisory updated
2026-10-14

Who should care

Network administrators and security teams responsible for Juniper Networks devices should assess exposure and prioritize patching or mitigation efforts.

Why it matters

This vulnerability requires attention from network administrators and security teams to prevent potential service disruptions. Defenders should verify affected versions, prioritize patching, and implement mitigations to limit exposure.

  • Potential service disruption due to rpd crashes.
  • Need for verification of affected versions and configurations.
  • Priority for patching or mitigating vulnerable systems.
  • Potential impact on network reliability and availability.

Technical summary

The vulnerability exists in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved. An unauthenticated adjacent attacker can cause a denial of service by sending a specific RSVP packet when a bidirectional LSP is enabled.

Defensive priority

Network administrators should prioritize patching or mitigating this vulnerability to prevent potential service disruptions.

Recommended defensive actions

  • Review and apply patches from Juniper Networks for affected Junos OS and Junos OS Evolved versions.
  • Implement network segmentation to limit adjacent attacker access.
  • Monitor network traffic for suspicious RSVP packets.
  • Verify configurations and enable bidirectional LSP only where necessary.

Evidence notes

The CVE Program and NVD provide official records of this vulnerability, with details on affected versions and potential impacts. The vulnerability is caused by a specific RSVP packet that can cause a crash of the routing protocol daemon (rpd) when a bidirectional LSP is enabled. The CVE record was published on 2026-10-14T16:29:08.504Z and has not been modified since then. The official CVE Program record and NIST NVD detail page provide source-provided CVE metadata and vulnerability

Sources and references

Verified primary and authoritative sources

  • CVE-2026-102071 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-102071

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-102071 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-102071

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.