Description

An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device. A local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device. This issue is not exploitable from the Junos CLI. This issue affects Junos OS:  * All versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S10,  * 22.2 versions before 22.2R3-S6,  * 22.4 versions before 22.4R3-S6,  * 23.2 versions before 23.2R2-S3,  * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R1-S2, 24.2R2.

INFO

Published Date :

2025-03-12T13:59:43.038Z

Last Modified :

2026-02-26T19:09:35.631Z

Source :

juniper
AFFECTED PRODUCTS

The following products are affected by CVE-2025-21590 vulnerability.

Vendors Products
Juniper
  • Junos
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-21590.

URL Resource
https://cloud.google.com/blog/topics/threat-intelligence/china-nexus-espionage-targets-juniper-routers cve-icon cve-icon
https://supportportal.juniper.net/JSA93446 cve-icon cve-icon
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21590 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact