CVE-2026-101999 - Vulnerability Details - OpenCVE

A Reachable Assertion vulnerability in the rpd process of Juniper Networks Junos OS and Junos EVO allows an adjacent attacker to cause a denial of service via an established LDP session carrying an IPv6 Prefix FEC in a specific Label message.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact Low

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Juniper Networks	Junos Os Junos Os Evolved

No data.

No data.

References

Link	Providers
https://supportportal.juniper.net/JSA112187

History

Fri, 23 Oct 2026 00:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Juniper Networks Juniper Networks junos Os Juniper Networks junos Os Evolved
Vendors & Products		Juniper Networks Juniper Networks junos Os Juniper Networks junos Os Evolved

Wed, 14 Oct 2026 17:00:00 +0000

Type	Values Removed	Values Added
Description		A Reachable Assertion vulnerability in the rpd process of Juniper Networks Junos OS and Junos EVO allows an adjacent attacker to cause a denial of service via an established LDP session carrying an IPv6 Prefix FEC in a specific Label message.
Title		Junos OS and Junos OS Evolved: An attacker causes rpd to crash when LDP is enabled
Weaknesses		CWE-617
References		https://supportportal.juniper.net/JSA112187
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/V:C/RE:M'}`

MITRE

Status: PUBLISHED

Assigner: juniper

Published: 2026-10-14T16:44:07.623Z

Updated: 2026-10-14T20:15:53.806Z

Reserved: 2026-09-28T16:34:36.551Z

Link: CVE-2026-101999

Vulnrichment

No data.

NVD

Status : Awaiting Analysis

Published: 2026-10-14T17:17:52.893

Modified: 2026-10-15T16:23:06.250

Link: CVE-2026-101999

Redhat

No data.

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