CVE-2026-102042
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Reachable Assertion in Juniper Junos OS via RSVP-TE LSP Signaling

Publication date: 2026-10-14

Last updated on: 2026-10-14

Assigner: Juniper Networks, Inc.

Description
A Reachable Assertion vulnerability in the rpd process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker to crash the routing process via RSVP-TE associated-bidirectional LSP signaling.

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Meta Information

Published
2026-10-14
Last Modified
2026-10-14
Generated
2026-10-19
AI Q&A
2026-10-15
EPSS Evaluated
2026-10-18
NVD
CVE-2026-102042
EUVD
EUVD-2026-101366

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-617 The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

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Executive Summary

This vulnerability is a Reachable Assertion issue in Juniper Networks Junos OS and Junos OS Evolved. It occurs in the rpd process and is triggered by RSVP-TE associated-bidirectional LSP signaling. An adjacent attacker can exploit this to crash the routing process.

Detection Guidance

This vulnerability is specific to Juniper Junos OS and Junos OS Evolved systems running the rpd process with RSVP-TE signaling. Detection requires checking for crashes in the routing process or monitoring for RSVP-TE associated-bidirectional LSP signaling issues. No specific commands are provided in the CVE details.

Impact Analysis

The impact includes disruption of routing services due to the crash of the routing process. This can lead to network instability or downtime, affecting connectivity and service availability.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards as it pertains to a routing process crash in Juniper Networks Junos OS and Junos OS Evolved. Compliance impacts would depend on system configuration and operational context rather than the vulnerability itself.

Mitigation Strategies

Apply the latest Junos OS or Junos OS Evolved security patches from Juniper Networks to address the Reachable Assertion vulnerability in the rpd process. Monitor Juniper's security advisories for updates and disable RSVP-TE associated-bidirectional LSP signaling if not required.

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