CVE-2025-52988

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS0 < 21.2R3-S9affected
Juniper NetworksJunos OS21.4 < 21.4R3-S8affected
Juniper NetworksJunos OS22.2 < 22.2R3-S6affected
Juniper NetworksJunos OS22.3 < 22.3R3-S3affected
Juniper NetworksJunos OS22.4 < 22.4R3-S6affected
Juniper NetworksJunos OS23.2 < 23.2R2-S1affected
Juniper NetworksJunos OS23.4 < 23.4R1-S2, 23.4R2affected
Juniper NetworksJunos OS Evolved0 < 22.4R3-S6-EVOaffected
Juniper NetworksJunos OS Evolved23.2-EVO < 23.2R2-S1-EVOaffected
Juniper NetworksJunos OS Evolved23.4-EVO < 23.4R1-S2-EVO, 23.4R2-EVOaffected

Weaknesses

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

Workarounds

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.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References