Description
An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).

When in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.

This issue affects:
Junos OS:


* All versions before 23.2R2-S6;
* 23.4 versions before 23.4R2-S7;
* 24.2 versions before 24.2R2-S4;
* 24.4 versions before 24.4R2-S4;
* 25.2 versions before 25.2R1-S2, 25.2R2;



Junos OS Evolved:
* All versions before 23.2R2-S6-EVO;
* 23.4 versions before 23.4R2-S8.11-EVO;
* 24.2 versions before 24.2R2-S4-EVO;
* 24.4 versions before 24.4R2-S5-EVO;
* 25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO;
Published: 2026-10-14
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Solution

The following software releases have been updated to resolve this specific issue: Junos OS: 23.2R2-S6, 23.4R2-S7, 24.2R2-S4, 24.4R2-S4, 25.2R1-S2, 25.2R2, 25.4R1, and all subsequent releases; Junos OS Evolved: 23.2R2-S6-EVO, 23.4R2-S8.11-EVO, 24.2R2-S4-EVO, 24.4R2-S5-EVO, 25.2R1-S2-EVO, 25.2R2-EVO, 25.4R1-EVO, and all subsequent releases. Note: For Junos OS releases 23.2, 23.4, and 24.2, and Junos OS Evolved releases 23.2-EVO, 23.4-EVO, and 24.2-EVO, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory.

Vendor Workaround

There are no known workarounds for this issue.

Tracking

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Advisories

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History

Wed, 14 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Description An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS). When in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged. This issue affects: Junos OS: * All versions before 23.2R2-S6; * 23.4 versions before 23.4R2-S7; * 24.2 versions before 24.2R2-S4; * 24.4 versions before 24.4R2-S4; * 25.2 versions before 25.2R1-S2, 25.2R2; Junos OS Evolved: * All versions before 23.2R2-S6-EVO; * 23.4 versions before 23.4R2-S8.11-EVO; * 24.2 versions before 24.2R2-S4-EVO; * 24.4 versions before 24.4R2-S5-EVO; * 25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO;
Title Junos OS and Junos OS Evolved: If in a traffic engineering scenario a specific valid BGP-LS attribute is received rpd crashes
Weaknesses CWE-184
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published:

Updated: 2026-10-14T16:23:55.281Z

Reserved: 2026-09-28T17:37:38.548Z

Link: CVE-2026-102087

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T17:18:04.800

Modified: 2026-10-14T17:18:04.800

Link: CVE-2026-102087

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-184

    Incomplete List of Disallowed Inputs