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CVE-2025-21590

CISA KEV

Published March 13, 2025 · Updated April 3, 2026

high
Official 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.

Affected Products

VendorProduct
JuniperJunos OS

Patch Status

Patch by 2025-04-03

Recommended Actions

  1. Check if your systems use any of the affected products listed above.
  2. Apply vendor patches immediately if available.
  3. This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
  4. Monitor vendor advisories for updates and additional mitigations.
  5. Review logs for indicators of compromise related to CVE-2025-21590.