kernel driver

  1. Patch Tuesday: Microsoft fixes Windows UDFS CVE-2026-23672 Elevation of Privilege

    Microsoft shipped an urgent fix on Patch Tuesday for a newly catalogued elevation-of-privilege flaw in the Windows Universal Disk Format File System Driver (UDFS), tracked as CVE-2026-23672, closing a local attack path that could let low‑privilege users escalate to SYSTEM on affected machines...
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    • elevation of privilege kernel driver patch tuesday windows security
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  2. CVE-2026-20940: Patch and Hunt Windows Cloud Files Mini Filter Driver

    Microsoft’s Security Update Guide lists CVE-2026-20940 as an elevation-of-privilege (EoP) vulnerability in the Windows Cloud Files Mini Filter Driver, and defenders should treat any new Cloud Files mini-filter entry as a high-priority patch-and-hunt item until proven otherwise. Background /...
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    • cloud files kernel driver patch management windows security
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  3. CVE-2026-20820: Windows CLFS heap overflow enables local privilege escalation

    Microsoft has recorded CVE-2026-20820 — a heap‑based buffer overflow in the Windows Common Log File System driver (clfs.sys) that Microsoft classifies as an elevation of privilege vulnerability; an authorized local attacker able to run code as a standard user or manipulate CLFS‑read inputs can...
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    • clfs vulnerability kernel driver local privilege escalation windows security
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    • Forum: Security Alerts