CVE-2026-102026
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Improper Resource Control in Juniper Junos OS BGP Route Update

Publication date: 2026-10-14

Last updated on: 2026-10-16

Assigner: Juniper Networks, Inc.

Description
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.

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Meta Information

Published
2026-10-14
Last Modified
2026-10-16
Generated
2026-10-19
AI Q&A
2026-10-15
EPSS Evaluated
2026-10-18
NVD
CVE-2026-102026
EUVD
EUVD-2026-101351

Affected Vendors & Products

Showing 17 associated CPEs
Vendor Product Version / Range
Juniper Networks Junos OS 0
Juniper Networks Junos OS 23.4
Juniper Networks Junos OS 24.2
Juniper Networks Junos OS 24.4
Juniper Networks Junos OS 25.2
Juniper Networks Junos OS 25.4
Juniper Networks Junos OS 26.2
Juniper Networks Junos OS Evolved 0
Juniper Networks Junos OS Evolved 23.4
Juniper Networks Junos OS Evolved 24.2
Juniper Networks Junos OS Evolved 24.4
Juniper Networks Junos OS Evolved 25.2
Juniper Networks Junos OS Evolved 25.4
Juniper Networks Junos OS Evolved 26.2
Juniper Networks Junos OS Evolved 23.4X100
Juniper Networks Junos OS Evolved 25.2X100
Juniper Networks Junos OS Evolved 25.4X300

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-664 The product does not maintain or incorrectly maintains control over a resource throughout its lifetime of creation, use, and release.

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Executive Summary

This vulnerability is an Improper Control of a Resource Through its Lifetime issue in Juniper Networks Junos OS and Junos OS Evolved. It occurs in the routing protocol daemon (rpd) and allows an adjacent eBGP peer to crash the routing daemon by sending a BGP route update when RIB sharding is enabled.

Detection Guidance

This vulnerability can be detected by monitoring for routing daemon crashes or BGP route update issues when RIB sharding is enabled. Check logs for rpd crashes or BGP session resets. Juniper recommends enabling logging for BGP updates and monitoring system logs for routing daemon failures.

Impact Analysis

An attacker could exploit this to cause a denial of service by crashing the routing daemon, leading to network disruptions and potential loss of connectivity for affected systems.

Compliance Impact

The vulnerability could lead to routing instability or outages, potentially disrupting network services. This may impact compliance with regulations requiring reliable data processing and availability, such as GDPR's data integrity principles or HIPAA's network security requirements. However, specific compliance impacts are not detailed in the provided CVE data.

Mitigation Strategies

Disable RIB sharding on affected Junos OS or Junos OS Evolved devices to prevent the routing-daemon crash. Apply the latest security patches from Juniper Networks as soon as they are available.

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