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

Juniper | Junos OS

• Date Added:
• 2025-03-13

• Due Date:
• 2025-04-03

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?

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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