CVE-2025-52988

Junos OS and Junos OS Evolved: Privilege escalation to root via CLI command 'request system logout'

Description

An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in the CLI of Juniper Networks Junos OS and Junos OS Evolved allows a high privileged, local attacker to escalated their privileges to root. When a user provides specifically crafted arguments to the 'request system logout' command, these will be executed as root on the shell, which can completely compromise the device. This issue affects: Junos OS:  * all versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S8, * 22.2 versions before 22.2R3-S6, * 22.3 versions before 22.3R3-S3, * 22.4 versions before 22.4R3-S6, * 23.2 versions before 23.2R2-S1, * 23.4 versions before 23.4R1-S2, 23.4R2; Junos OS Evolved: * all versions before 22.4R3-S6-EVO, * 23.2-EVO versions before 23.2R2-S1-EVO, * 23.4-EVO versions before 23.4R1-S2-EVO, 23.4R2-EVO.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 22.4R3-S6-EVO, 23.2R2-S1-EVO, 23.4R1-S2-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases; Junos OS: 21.2R3-S9, 21.4R3-S8, 22.2R3-S6, 22.3R3-S3, 22.4R3-S6, 23.2R2-S1, 23.4R1-S2, 23.4R2, 24.2R1, and all subsequent releases.

Workaround:

  • Use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators. Utilize CLI authorization to disallow execution of the 'request system logout' command.

Category

8.4
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Affected: Juniper Networks Junos OS Evolved
Published at:
Updated at:

References

Link Tags
https://supportportal.juniper.net/JSA100095 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-52988?
CVE-2025-52988 has been scored as a high severity vulnerability.
How to fix CVE-2025-52988?
To fix CVE-2025-52988: The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 22.4R3-S6-EVO, 23.2R2-S1-EVO, 23.4R1-S2-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases; Junos OS: 21.2R3-S9, 21.4R3-S8, 22.2R3-S6, 22.3R3-S3, 22.4R3-S6, 23.2R2-S1, 23.4R1-S2, 23.4R2, 24.2R1, and all subsequent releases.
Is CVE-2025-52988 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-52988 is being actively exploited.
What software or system is affected by CVE-2025-52988?
CVE-2025-52988 affects Juniper Networks Junos OS, Juniper Networks Junos OS Evolved.
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