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CVE-2026-33786

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

Published: Apr 9, 2026Updated: Apr 17, 2026 Sources: CVE List NVDCWE-754
NVD MITRE
5.5CVSSMEDIUM
EPSS Score
0.1%
Top 99.1%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-754

Affected Products

Junos OSJuniper NetworksNetworking Infrastructure
junosjuniperNetworking Infrastructure
juniper networkscommercialUSNetworking Infrastructure
junipercommercialUSNetworking Infrastructureaka juniper networks, juniper networks inc.

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available

References

https://kb.juniper.net/JSA107810
kb.juniper.net

Timeline

Published
Apr 9, 2026
Last Updated
Apr 17, 2026

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