---
id: CVE-2026-101936
title: >-
  A Reachable Assertion vulnerability in the srxpfe process of Juniper Networks
  Junos OS on SRX Series allows an adjacent network attacker to cause a denial
  of service of the data plane via malformed firewall-authentication
  synchronization…
summary: >-
  A Reachable Assertion vulnerability in the srxpfe process of Juniper Networks
  Junos OS on SRX Series allows an adjacent network attacker to cause a denial
  of service of the data plane via malformed firewall-authentication
  synchronization…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-617
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: '2026-10-15'
sourceUpdated: '2026-10-15T16:23:06.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101936'
references:
  - url: 'https://supportportal.juniper.net/JSA112186'
    label: sirt@juniper.net
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-14T20:15:31.148091Z'
ingestedAt: '2026-10-14T17:44:53.626Z'
epss: 0.00271
epssPercentile: 0.19184
---

## Overview

A Reachable Assertion vulnerability in the srxpfe process of Juniper Networks Junos OS on SRX Series allows an adjacent network attacker to cause a denial of service of the data plane via malformed firewall-authentication synchronization traffic on chassis-cluster fabric interfaces.

## Remediation

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