CVE-2026-66799

Windows Key Guard Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Key Guard allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 23 more

CVE-2026-65790

Windows Message Queuing Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Message Queuing allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 23 more

CVE-2026-70307

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Use after free in Windows Ancillary Function Driver for WinSock 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 23 more

CVE-2026-70348

Windows Management Services Denial of Service Vulnerability

Improper link resolution before file access ('link following') in Windows Management Services allows an authorized attacker to deny service locally.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 11 24h2 Windows 11 24h2 Windows 11 25h2 and 3 more

CVE-2026-66804

Microsoft Windows Cross Device Service Elevation of Privilege Vulnerability

Improper access control in Windows Cross Device Service allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 22h2 Windows 10 22h2 Windows 11 24h2 and 5 more

CVE-2026-65777

Active Directory Security Feature Bypass Vulnerability

Inadequate encryption strength in Windows Active Directory allows an authorized attacker to bypass a security feature over a network.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 11 23h2 Windows 11 23h2 Windows 11 24h2 and 8 more

CVE-2026-32202

Windows Shell Spoofing Vulnerability

Protection mechanism failure in Windows Shell allows an unauthorized attacker to perform spoofing over a network.

CVSS 3.1 · 4.3 Medium EPSS 71.3% KEV · Listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 26 more

CVE-2026-48566

Windows DWM Core Library Information Disclosure Vulnerability

Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 11 24h2 Windows 11 24h2 Windows 11 25h2 and 5 more

CVE-2026-62872

.NET Framework Elevation of Privilege Vulnerability

Incorrect authorization in .NET Framework allows an authorized attacker to elevate privileges over a network.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

.net .net Framework Windows 10 1607 and 12 more

CVE-2026-70345

Windows Installer Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 23 more

CVE-2026-65810

.NET Framework Elevation of Privilege Vulnerability

Relative path traversal in .NET Framework allows an unauthorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

.net .net Framework Windows 10 1607 and 12 more

CVE-2026-70346

Windows Installer Elevation of Privilege Vulnerability

Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 23 more

CVE-2026-70347

Windows Installer Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 23 more

CVE-2026-70344

Windows Installer Elevation of Privilege Vulnerability

Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 23 more

CVE-2026-61352

Remote Desktop Client Remote Code Execution Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Remote Desktop Client allows an unauthorized attacker to execute code over a 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 23 more

CVE-2026-42976

Remote Access Management service/API (RPC server) Elevation of Privilege Vulnerability

Missing authentication for critical function in Windows RPC API allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 21 more

CVE-2026-59122

Windows Telephony Service Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Telephony Service 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 23 more

CVE-2026-59125

Virtual Hard Disk (VHD) Miniport Driver Elevation of Privilege Vulernability

Use after free in Virtual Hard Disk (VHD) Miniport Driver 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 18 more

CVE-2026-59126

Windows Event Logging Service Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Event Logging Service allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 21h2 Windows 10 21h2 Windows 10 22h2 and 12 more

CVE-2026-61349

Windows Work Folder Service Elevation of Privilege Vulnerability

Use after free in Windows Work Folder Service allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 22 more