CVE-2025-20109

Published Aug 12, 2025 CVSS 4.0 · 7.3 High EPSS < 1% KEV · Not listed
Description
Improper Isolation or Compartmentalization in the stream cache mechanism for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via local access.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4347-1 intel-microcode security update
Debian DSA Debian DSA DSA-6030-1 intel-microcode security update
EUVD EUVD EUVD-2025-24431 Improper Isolation or Compartmentalization in the stream cache mechanism for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via local access.
Ubuntu USN Ubuntu USN USN-7866-1 Intel Microcode vulnerabilities
History
Type Values Removed Values Added
First Time appeared Intel
Intel processors
Vendors & Products Intel
Intel processors
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper Isolation or Compartmentalization in the stream cache mechanism for some Intel(R) Processors may allow an authenticated user to potentially enable escalation of privilege via local access.
Weaknesses CWE-653
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 7.3, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
intel
Published
Updated
Feb 26, 2026, 5:49 PM
Reserved
Oct 10, 2024, 3:00 AM
Status
Deferred
Published
Aug 12, 2025, 5:15 PM
Modified
Jun 17, 2026, 8:40 AM