What is CVE-2025-20109?

CVE-2025-20109 is a high-severity vulnerability in Intel(r) Processors, classified under CWE-653. CVSS score: 7.8/10. Published 2025-08-12.

How severe is CVE-2025-20109?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2025-20109 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Intel(r) Processors

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.

EPSS: 0.000 (7.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

N/a Intel(r) Processors — versions See references

Weakness classification (CWE)

CWE-653

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01249.html

Frequently asked questions

What is CVE-2025-20109?: CVE-2025-20109 is a high-severity vulnerability in Intel(r) Processors, classified under CWE-653. CVSS score: 7.8/10. Published 2025-08-12.
How severe is CVE-2025-20109?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2025-20109 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.