CVE-2026-33787 — Junos OS: SRX1500, SRX4100, SRX4200, SRX4600: When a specific show command is executed chassisd crashes

Description (CNA)

An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis control daemon (chassisd) of Juniper Networks Junos OS on SRX1500, SRX4100, SRX4200 and SRX4600 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 SRX1500, SRX4100, SRX4200 and SRX4600: * 23.2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S7 * 24.2 versions before 24.2R2-S2, * 24.4 versions before 24.4R2, * 25.2 versions before 25.2R1-S1, 25.2R2.

Affected (CNA)

Vendor / product	Versions
Juniper Networks / Junos OS	affected 0 before 23.2R2-S6; affected 23.4 before 23.4R2-S7; affected 24.2 before 24.2R2-S2; affected 24.4 before 24.4R2; affected 25.2 before 25.2R1-S1, 25.2R2

CWE

CWE-754

References

https://kb.juniper.net/JSA107873

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.