CVE-2025-20109
Linux Debian vulnerability analysis and mitigation

Overview

CVE-2025-20109 is a security vulnerability identified in Intel processors' stream cache mechanism. The vulnerability was disclosed on August 12, 2025, and involves improper isolation or compartmentalization that could potentially lead to privilege escalation. This vulnerability specifically affects certain Intel processor models and requires local access for exploitation (NVD).

Technical details

The vulnerability is classified as an Improper Isolation or Compartmentalization issue (CWE-653) in the stream cache mechanism. According to the CVSS scoring system, it received a CVSS v4.0 base score of 7.3 (HIGH) and a CVSS v3.1 base score of 7.8 (HIGH). The vulnerability requires local access (AV:L), high attack complexity (AC:H), low privileges (PR:L), and no user interaction (UI:N) for exploitation (NVD).

Impact

If successfully exploited, this vulnerability could enable an authenticated user to escalate privileges through local access. The high CVSS scores indicate significant potential impact on the confidentiality, integrity, and availability of the affected systems (NVD).

Additional resources


SourceThis report was generated using AI

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