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PatchSiren cyber security CVE debrief

CVE-2026-102019 Juniper Networks CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-10-14T16:46:20.071Z and has not been modified since then. This medium-severity vulnerability in Junos OS and Junos OS Evolved can cause a denial-of-service condition via malformed RIPv2 messages when RIP is enabled. Network administrators and security teams should assess exposure, prioritize verification of affected versions, and implement compensating controls to monitor and restrict RIP traffic. The vulnerability affects Junos OS and Junos OS Evolved systems, and its exploitation could lead to a denial-of-service condition.

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 Junos OS and Junos OS Evolved systems should assess exposure and prioritize verification and remediation efforts.

Why it matters

CVE-2026-102019 is a medium-severity vulnerability in Junos OS and Junos OS Evolved that can cause a denial-of-service condition via malformed RIPv2 messages when RIP is enabled. Network administrators and security teams should assess exposure, prioritize verification of affected versions, and implement compensating controls to monitor and restrict RIP traffic.

  • Denial-of-service condition via malformed RIPv2 messages
  • Potential routing service disruption when RIP is enabled
  • Need for verification of Junos OS and Junos OS Evolved versions
  • Potential need for compensating controls to monitor and restrict RIP traffic

Technical summary

A vulnerability in Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a denial-of-service condition via a malformed RIPv2 message when RIP is enabled. The vulnerability affects Junos OS and Junos OS Evolved systems, and its exploitation could lead to a denial-of-service condition and potential routing service disruption. Network administrators and security teams should assess exposure, prioritize verification of affected versions, and implement compensating controls to monitor and restrict RIP traffic.

Defensive priority

Network administrators and security teams should assess exposure and prioritize verification of Junos OS and Junos OS Evolved versions, focusing on those listed as affected.

Recommended defensive actions

  • Verify Junos OS and Junos OS Evolved versions against the affected versions list
  • Implement compensating controls to monitor and restrict RIP traffic
  • Review and update network configurations to limit exposure

Evidence notes

The CVE record and source item provide details on the vulnerability in Junos OS and Junos OS Evolved, but specific details on exploitation are limited.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-102019 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-102019

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

  • CVE-2026-102019 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-102019

    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.