Description
An Improper Initialization vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a remote BGP peer to cause an rpd crash via an LLGR-stale route update readvertised to a configured non-LLGR peer group.
Published: 2026-10-14
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

The following software releases have been updated to resolve this specific issue: Junos OS: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3, 25.4R2, 26.2R1-S2, 26.2R2, 26.4R1, and all subsequent releases. Junos OS Evolved: 23.2R2-S7.7-EVO, 23.4R2-S8.11-EVO, 24.2R2-S5.6-EVO, 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.4R1-S3-EVO, 25.4R2-EVO, 26.2R1-S2-EVO, 26.2R2-EVO, 26.4R1-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

Configure 'graceful-restart long-lived advertise-to-non-llgr-neighbor omit-no-export' or remove 'advertise-to-non-llgr-neighbor'.

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 Improper Initialization vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a remote BGP peer to cause an rpd crash via an LLGR-stale route update readvertised to a configured non-LLGR peer group.
Title Junos OS and Junos OS Evolved: A remote BGP peer causes an rpd crash when long-lived graceful restart (LLGR) is used
Weaknesses CWE-665
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published:

Updated: 2026-10-14T16:20:25.147Z

Reserved: 2026-09-28T16:28:35.624Z

Link: CVE-2026-101957

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T17:17:48.493

Modified: 2026-10-14T17:17:48.493

Link: CVE-2026-101957

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses