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CVE-2026-33791

Junos OS and Junos OS Evolved: Execution of crafted CLI commands allows for arbitrary shell injection as root PUBLISHED

Description (CNA)

An OS Command Injection vulnerability in the CLI processing of Juniper Networks Junos OS and Junos OS Evolved allows a local, high-privileged attacker executing specific, crafted CLI commands to inject arbitrary shell commands as root, leading to a complete compromise of the system. Certain 'set system' commands, when executed with crafted arguments, are not properly sanitized, allowing for arbitrary shell injection. These shell commands are executed as root, potentially allowing for complete control of the vulnerable system. This issue affects: Junos OS:  * all versions before 22.4R3-S8,  * from 23.2 before 23.2R2-S5,  * from 23.4 before 23.4R2-S7,  * from 24.2 before 24.2R2-S2,  * from 24.4 before 24.4R2,  * from 25.2 before 25.2R2;  Junos OS Evolved:  * all versions before 22.4R3-S8-EVO,  * from 23.2 before 23.2R2-S5-EVO,  * from 23.4 before 23.4R2-S7-EVO,  * from 24.2 before 24.2R2-S2-EVO,  * from 24.4 before 24.4R2-EVO,  * from 25.2 before 25.2R1-S1-EVO, 25.2R2-EVO.

Affected (CNA)

Vendor / productVersions
Juniper Networks / Junos OSaffected 0 before 22.4R3-S8; affected 23.2 before 23.2R2-S5; affected 23.4 before 23.4R2-S7; affected 24.2 before 24.2R2-S2; affected 24.4 before 24.4R2; affected 25.2 before 25.2R2
Juniper Networks / Junos OS Evolvedaffected 0 before 22.4R3-S8-EVO; affected 23.2 before 23.2R2-S5-EVO; affected 23.4 before 23.4R2-S7-EVO; affected 24.2 before 24.2R2-S2-EVO; affected 24.4 before 24.4R2-EVO; affected 25.2 before 25.2R1-S1-EVO, 25.2R2-EVO

CWE

CWE-78

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.