CVE-2026-102025

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Memory Corruption in Juniper Junos OS via BGP Route Update

Publication date: 2026-10-14

Last updated on: 2026-10-16

Assigner: Juniper Networks, Inc.

Description

A Mismatched Memory Management Routines vulnerability in the routing protocol daemon (rpd) process of Juniper Networks Junos OS and Junos OS Evolved allows an authenticated network-based attacker to cause a denial of service via a BGP route update when extended next-hop tunneling and SRv6 service processing are used.

CVSS Scores

EPSS Scores

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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-2026-102025

EUVD

EUVD-2026-101350

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-762	The product attempts to return a memory resource to the system, but it calls a release function that is not compatible with the function that was originally used to allocate that resource.

Attack-Flow Graph

Executive Summary

This vulnerability is a Mismatched Memory Management Routines issue in Juniper Networks Junos OS and Junos OS Evolved. It occurs in the routing protocol daemon (rpd) process and is triggered when an authenticated network-based attacker sends a BGP route update with extended next-hop tunneling and SRv6 service processing enabled. This causes a denial of service.

Detection Guidance

Detection requires monitoring for BGP route updates causing rpd crashes or memory issues. Check logs for rpd crashes with commands like 'show system processes extensive | match rpd' or 'show log messages | match rpd'. Monitor memory usage with 'show system memory'. Enable BGP debugging with 'set protocols bgp traceoptions file bgp-debug' if needed.

Impact Analysis

An attacker could exploit this flaw to disrupt network services by causing the rpd process to crash or become unresponsive, leading to a denial of service. This could affect routing stability and availability of network infrastructure.

Compliance Impact

This vulnerability causes a denial of service via BGP route updates under specific conditions, which could disrupt network availability. Disruptions may impact systems handling sensitive data, potentially violating compliance requirements for availability in standards like GDPR and HIPAA.

Mitigation Strategies

Disable extended next-hop tunneling and SRv6 service processing if not required. Apply Junos OS patches from Juniper Networks immediately. Monitor BGP route updates for unusual activity.

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