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PatchSiren cyber security CVE debrief

CVE-2026-102026 Juniper Networks CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-10-14T16:47:48.992Z and has not been modified since then. This high-severity vulnerability in Junos OS and Junos OS Evolved can cause a routing-daemon crash when BGP RIB sharding is used. Network administrators and security teams should assess potential exposure and impact. The vulnerability is caused by an Improper Control of a Resource Through its Lifetime issue in the routing protocol daemon (rpd).

Vendor
Juniper Networks
Product
Junos OS
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-14
Original CVE updated
2026-10-16
Advisory published
2026-10-14
Advisory updated
2026-10-16

Who should care

Network administrators and security teams responsible for Junos OS and Junos OS Evolved deployments, especially those using BGP RIB sharding, should assess potential exposure and impact.

Why it matters

CVE-2026-102026 is a high-severity vulnerability in Junos OS and Junos OS Evolved that can cause a routing-daemon crash when BGP RIB sharding is used. Network administrators and security teams should prioritize verifying exposure, assessing potential impact, and applying necessary patches or updates.

  • Potential routing-daemon crashes may require restart or failover procedures
  • Verification of Junos OS and Junos OS Evolved versions and configurations is necessary
  • Assessing BGP RIB sharding usage and potential exposure is crucial
  • Applying vendor-provided patches or updates may be necessary to mitigate vulnerability

Technical summary

An Improper Control of a Resource Through its Lifetime vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent eBGP peer to cause a routing-daemon crash via a BGP route update when RIB sharding is enabled. The vulnerability can be triggered by a specifically crafted BGP route update. Network administrators and security teams should prioritize verifying exposure and assessing potential impact, focusing on Junos OS and Junos OS Evolved deployments that use BGP RIB sharding.

Defensive priority

Network administrators and security teams should prioritize verifying exposure and assessing potential impact, focusing on Junos OS and Junos OS Evolved deployments that use BGP RIB sharding.

Recommended defensive actions

  • Verify Junos OS and Junos OS Evolved versions to determine exposure
  • Assess BGP RIB sharding usage in the network
  • Review and apply vendor-provided patches or updates
  • Monitor network for potential routing-daemon crashes
  • Perform a thorough review of network configurations
  • Check for any existing compensating controls
  • Track the status of remediation efforts

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on potential exploitation or impact. Official sources, including the CVE Program and NVD, offer relevant information.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-102026 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-102026

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

  • CVE-2026-102026 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-102026

    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.