CVE-2026-101966: Junos OS Evolved: A crafted analytics sensor resource causes telemetry dial-out daemon denial of service

Published Oct 14, 2026

Updated

A Use of Externally-Controlled Format String vulnerability in the jti-dialoutd of Juniper Networks Junos OS Evolved allows an authenticated network attacker to cause persistent telemetry dial-out denial of service via a crafted analytics sensor resource submitted through gNMI listener.

Affected Software

1 affected component

Juniper Networks Junos OS Evolved

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 23.2R2-S7.7-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 23.4R2-S8.11-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 24.2R2-S5.6-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 24.4R2-S5-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.2R2-S2-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.2X100-D35-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.4R1-S3-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.4R2-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 25.4X300-D40-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 26.2R1-S2-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 26.2R2-EVO
Upgrade
Upgrade Juniper Networks Junos OS Evolved to a version that resolves this vulnerability.
Fixed in 26.4R1-EVO

Event History

Oct 14, 2026

CVE Published

via MITRE·04:09 PM

Data Sourced

via MITRE·04:09 PM

RemedyDescriptionSeverityWeakness

Frequently Asked Questions

What access does an attacker need to exploit this issue?

The attacker must be authenticated and able to submit a crafted analytics sensor resource through the gNMI listener.

What service is affected if exploitation succeeds?

Successful exploitation causes persistent denial of service for telemetry dial-out through the jti-dialoutd daemon. The provided information identifies availability impact and limited confidentiality impact, but no integrity impact.