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CVE-2026-105509

Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability

Use after free in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 11 26h1 Windows 11 26h1
CVE-2026-105507

Windows Installer Elevation of Privilege Vulnerability

An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 20 more
CVE-2026-88212

Windows Network Address Translation (NAT) Remote Code Execution Vulnerability

Use after free in Windows Network Address Translation (NAT) allows an unauthorized attacker to execute code over an adjacent network.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 10 more
CVE-2026-102219

Windows Modern Device Management (MDM) Remote Code Execution Vulnerability

Inadequate encryption strength in Windows Modern Device Management (MDM) allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 10 1809 Windows 10 21h2 Windows 10 21h2 and 17 more
CVE-2026-103571

Windows CNG Key Isolation Service Elevation of Privilege Vulnerability

An elevation of privilege vulnerability exists when the Windows Cryptography Next Generation (CNG) Key Isolation service improperly handles memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges. The security update addresses the vulnerability by correcting how the Windows CNG Key Isolation Service handles memory.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 20 more
CVE-2026-105511

Windows Point-to-Point Protocol over Ethernet (PPPoE) Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Point-to-Point Protocol over Ethernet (PPPoE) allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 20 more