cve-2026-26153

CVE-2026-26153 is a Windows Encrypted File System (EFS) elevation-of-privilege vulnerability rated Important by Microsoft with a CVSS base score of 7.8. The advisory indicates no active exploitation or required user interaction, classifying it as a local privilege-escalation bug that can turn a foothold into full system control. Microsoft has published it through the Security Update Guide, confirming the vulnerability even if the exploit path is not fully public. Security teams typically treat such bugs as high-priority due to their potential impact.