Improper Check for Unusual or Exceptional Conditions in Junos OS - CVE-2026-33787

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU130700

Improper Check for Unusual or Exceptional Conditions in Junos OS - CVE-2026-33787

Published: May 8, 2026


Vulnerability identifier: #VU130700
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-33787
CWE-ID: CWE-754
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Junos OS
Software vendor:
Juniper Networks, Inc.

Description

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper check for unusual or exceptional conditions in the chassis control daemon (chassisd) when executing a specific 'show chassis' CLI command. A local user can execute the affected command to cause a denial of service.

The daemon crash and restart causes a momentary impact to traffic until all modules are online again.


Remediation

Install security update from vendor's website.

External links