High 7.5Published Oct 14, 2026

CVE-2026-101957Junos OS and Junos OS Evolved: A remote BGP peer causes an rpd crash when long-lived graceful restart (LLGR) is used

Updated under an hour ago (Oct 27, 2026, 2:50 AM ET)

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It affects Juniper Networks Junos OS and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.55%, higher than 45% of scored CVEs.

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Every CVE for Juniper Networks Junos OS

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-665
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.55% (percentile 45)
Assigned by: juniper
NVD analysis: Awaiting Analysis
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Juniper Networks Junos OS juniper_networks:junos_os (from the name)	before 23.2R2-S7.7; from 23.4 before 23.4R2-S8.13; from 24.2 before 24.2R2-S5.5; from 24.4 before 24.4R2-S5; from 25.2 before 25.2R2-S2; from 25.4 before 25.4R1-S3; from 26.2 before 26.2R1-S2	CNA record
Juniper Networks Junos OS Evolved juniper_networks:junos_os_evolved (from the name)	before 23.2R2-S7.7-EVO; from 23.4 before 23.4R2-S8.11-EVO; from 24.2 before 24.2R2-S5.6-EVO; from 24.4 before 24.4R2-S5-EVO; from 25.2 before 25.2R2-S2-EVO; from 25.4 before 25.4R1-S3-EVO; from 26.2 before 26.2R1-S2-EVO; 23.4X100; and 2 more ranges	CNA record

References

References

https://supportportal.juniper.net/JSA112187	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.