---
id: CVE-2026-102176
title: >-
  A Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
  vulnerability in the SDK service process of Juniper Networks Junos OS allows
  an unauthenticated network attacker to cause a denial of service or compromise
  the Rout…
summary: >-
  A Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
  vulnerability in the SDK service process of Juniper Networks Junos OS allows
  an unauthenticated network attacker to cause a denial of service or compromise
  the Rout…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-120
vendor: Juniper Networks
product: Junos OS
affected:
  - junos_os < 23.2R2-S7.7
  - junos_os >= 23.4 < 23.4R2-S8.13
  - junos_os >= 24.2 < 24.2R2-S5.5
  - junos_os >= 24.4 < 24.4R2-S5
  - junos_os >= 25.2 < 25.2R2-S2
  - junos_os >= 25.4 < 25.4R1-S3
  - junos_os >= 26.2 < 26.2R1-S2
published: '2026-10-14'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T17:17:10.110'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102176'
references:
  - url: 'https://supportportal.juniper.net/JSA112188'
    label: sirt@juniper.net
tags:
  - nvd
  - cve.org
epss: 0.00298
epssPercentile: 0.22333
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T16:35:55.790852Z'
ingestedAt: '2026-10-14T17:44:53.668Z'
---

## Overview

A Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in the SDK service process of Juniper Networks Junos OS allows an unauthenticated network attacker to cause a denial of service or compromise the Routing Engine by sending specific packets when the SDK service and a JDAF routing instance are enabled.

## Remediation

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