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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS | 24.4 – < 24.4R1-S3, 24.4R2 | 24.4R1-S3, 24.4R2 |
Advisories 1
- WID-SEC-2026-1022 Juniper Patchday April 2026: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 9, 2026
References
- https://kb.juniper.net/JSA107810 vendor-advisory