CVE-2025-21590

Known Exploited Vulnerability Entry External Catalog

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Entry Details

CVE-2025-21590

Confirmed

Yes

2025-03-13 00:00 UTC

Timestamps

2025-03-13

2025-03-13

Scope

KEV entry: Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability | Affected: Juniper / Junos OS | 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. | Required 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. | Due date: 2025-04-03 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): 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

References
  • {'id': 'CVE-2025-21590', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-21590'}

2bad227d-2015-4b65-848b-c70d3a637951

405284c2-e461-4670-8979-7fd2c9755a60

2026-02-02 13:24 UTC

2026-02-06 07:53 UTC

Evidence (1)
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-653"
  ],
  "date_added": "2025-03-13",
  "due_date": "2025-04-03",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "Junos OS",
  "vendorProject": "Juniper",
  "vulnerabilityName": "Juniper Junos OS Improper Isolation or Compartmentalization Vulnerability"
}
 -
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