CVE-2026-33786

MEDIUM

Junos OS: SRX1600, SRX2300, SRX4300: When a specific show command is executed chassisd crashes

Title source: cna

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis control daemon (chassisd) of Juniper Networks Junos OS on SRX1600, SRX2300 and SRX4300 allows a local attacker with low privileges to cause a complete Denial of Service (DoS). When a specific 'show chassis' CLI command is executed, chassisd crashes and restarts which causes a momentary impact to all traffic until all modules are online again. This issue affects Junos OS on SRX1600, SRX2300 and SRX4300: * 24.4 versions before 24.4R1-S3, 24.4R2. This issue does not affect Junos OS versions before 24.4R1.

References (1)

[Vendor Advisory] https://kb.juniper.net/JSA107810

Scores

CVSS v3 5.5

EPSS 0.0001

EPSS Percentile 2.9%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-754

Status published

Products (2)

juniper/junos 24.4 (4 CPE variants)

Juniper Networks/Junos OS 24.4 - 24.4R1-S3, 24.4R2

Published Apr 09, 2026

Tracked Since Apr 10, 2026