Riskcovery

CVE-2025-52988

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

State
Published
Severity
8.4 High
Published
Jul 11, 2025
Updated
Feb 26, 2026
Reserved
Jun 23, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.08.4 HighCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/AU:Y/R:U/RE:Mjuniper
3.16.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hjuniper

Weaknesses

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

ProductVersions
Junos OSJuniper Networks
  • before 21.2R3-S9Affected
  • 21.4 to before 21.4R3-S8Affected
  • 22.2 to before 22.2R3-S6Affected
  • 22.3 to before 22.3R3-S3Affected
  • 22.4 to before 22.4R3-S6Affected
  • 23.2 to before 23.2R2-S1Affected
  • 23.4 to before 23.4R1-S2, 23.4R2Affected
Junos OS EvolvedJuniper Networks
  • before 22.4R3-S6-EVOAffected
  • 23.2-EVO to before 23.2R2-S1-EVOAffected
  • 23.4-EVO to before 23.4R1-S2-EVO, 23.4R2-EVOAffected

References

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