---
id: CVE-2026-101966
title: >-
  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…
summary: >-
  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…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'
cwe:
  - CWE-134
vendor: Juniper Networks
product: Junos OS Evolved
affected:
  - junos_os_evolved >= 25.4 < 25.4R1-S3-EVO
  - junos_os_evolved >= 26.2 < 26.2R1-S2-EVO
  - junos_os_evolved 23.4X100
  - junos_os_evolved >= 25.2X100 < 25.2X100-D35-EVO
  - junos_os_evolved >= 25.4X300 < 25.4X300-D40-EVO
published: '2026-10-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T16:23:06.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101966'
references:
  - url: 'https://supportportal.juniper.net/JSA112250'
    label: sirt@juniper.net
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-14T20:35:12.306166Z'
ingestedAt: '2026-10-14T17:44:53.633Z'
epss: 0.00427
epssPercentile: 0.36771
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.