CVE-2025-21590β€”Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability

PUBLISHEDvulnerability record
2025-03-13 Β· last modified June 21, 2025

Metadata

CVE ID:
CVE-2025-21590
Project:
Juniper
Product:
Junos OS
Date Added:
2025-03-13
Due Date:
2025-04-03
Last Updated:
June 21, 2025

Vulnerability Name

Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability

Description

Juniper Junos OS contains an improper isolation or compartmentalization vulnerability. This vulnerability could allows a local attacker with high privileges to inject arbitrary code.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:
Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Additional Notes

  • https://supportportal.juniper.net/s/article/2025-03-Out-of-Cycle-Security-Bulletin-Junos-OS-A-local-attacker-with-shell-access-can-execute-arbitrary-code-CVE-2025-21590?language=en_US
  • https://nvd.nist.gov/vuln/detail/CVE-2025-21590

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