CVE-2026-33786

published 2026-04-09

CVE-2026-33786: An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis control daemon (chassisd) of Juniper Networks Junos OS on SRX1600, SRX2300…

medium 6.8 CVSS 4.0

AV L AC L AT N PR L UI N VC N VI N VA H SC N SI N SA L E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU Y R A V X RE M U X

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
juniper	junos_os	—	—
juniper	srx_series	—	—
juniper_networks	junos_os	>= 24.4 < 24.4R1-S3, 24.4R2	24.4R1-S3, 24.4R2

CWE-754