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7.8
Windows Encrypting File System (EFS) Privilege Escalation Risk
CVE-2026-26153
Summary
An authorized user on a Windows system can potentially exploit a weakness in the Encrypting File System, allowing them to gain elevated access to the system. This means an attacker with legitimate access to a Windows system could use this vulnerability to gain more powerful user privileges, potentially leading to further system compromise. Affected users should update their Windows systems to the latest security patches to prevent exploitation.
Original title
Out-of-bounds read in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.
Original description
Out-of-bounds read in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges locally.
nvd CVSS3.1
7.8
Vulnerability type
CWE-125
Out-of-bounds Read
Published: 14 Apr 2026 · Updated: 14 Apr 2026 · First seen: 14 Apr 2026