CVE-2025-20109

HIGH
Published Aug 12, 2025 Modified Apr 15, 2026 CWE-653

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.

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CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness Type (CWE)

CWE-653 CWE-653

References

Frequently Asked Questions

What is CVE-2025-20109? +
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. It has a CVSS v3.1 base score of 7.8 (HIGH).
How severe is CVE-2025-20109? +
CVE-2025-20109 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
How do I check if I'm vulnerable to CVE-2025-20109? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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