CVE-2026-33798 HIGH

CVE-2026-33798: Junos OS and Junos OS Evolved: SRX Series: An attacker causes remote code execution when SRX chassis-cluster is enabled

Vendor Juniper Networks
Product Junos OS
Weakness CWE-121
Published October 14, 2026
Last update October 15, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 14, 2026 CVE published
October 15, 2026 Record updated