---
id: CVE-2026-33798
title: >-
  A Stack-based Buffer Overflow vulnerability in the srxpfe of Juniper Networks
  Junos OS and Junos OS Evolved on the SRX Series allows an L2-adjacent attacker
  to execute arbitrary code as root via high-availability fabric traffic.
summary: >-
  A Stack-based Buffer Overflow vulnerability in the srxpfe of Juniper Networks
  Junos OS and Junos OS Evolved on the SRX Series allows an L2-adjacent attacker
  to execute arbitrary code as root via high-availability fabric traffic.
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-121
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T19:17:15.617'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-33798'
references:
  - url: 'https://supportportal.juniper.net/JSA112186'
    label: sirt@juniper.net
tags:
  - nvd
ingestedAt: '2026-10-14T17:44:53.675Z'
---

## Overview

A Stack-based Buffer Overflow vulnerability in the srxpfe of Juniper Networks Junos OS and Junos OS Evolved on the SRX Series allows an L2-adjacent attacker to execute arbitrary code as root via high-availability fabric traffic.

## Remediation

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