Windows 10 21h2 CVEs and Security Vulnerabilities

CVE-2026-70304

Windows DNS Elevation of Privilege Vulnerability

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

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-65798

Windows DNS Elevation of Privilege Vulnerability

Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-65799

Windows DNS Elevation of Privilege Vulnerability

Integer overflow or wraparound in Windows DNS allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-62769

Windows DNS Elevation of Privilege Vulnerability

Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-62881

Windows DNS Elevation of Privilege Vulnerability

Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-62883

Windows DNS Elevation of Privilege Vulnerability

Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-70354

.NET Core Remote Code Execution Vulnerability

Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

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

Vendors

Microsoft

Products

.net .net Framework Microsoft Visual Studio 2022 and 17 more

CVE-2026-50472

Windows LUA File Virtualization Filter Driver Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows LUAFV 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-2026-56174

Windows Narrator Braille Elevation of Privilege Vulnerability

Untrusted search path in Windows Narrator Braille allows an authorized attacker to elevate privileges locally.

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

Vendors

Microsoft

Products

Windows 10 1809 Windows 10 21h2 Windows 10 21h2 and 9 more

CVE-2026-54113

Remote Procedure Call Denial of Service Vulnerability

Allocation of resources without limits or throttling in Windows Kernel allows an unauthorized attacker to deny service over a network.

CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 20 more

CVE-2026-54984

Windows Imaging Component Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Imaging Component allows an unauthorized attacker to execute code 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-2026-49179

Windows Active Directory Domain Services Remote Code Execution Vulnerability

Improper neutralization of special elements used in a command ('command injection') in Windows Active Directory allows an unauthorized attacker to execute code over a network.

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

Vendors

Microsoft

Products

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

CVE-2026-59128

Windows Encrypting File System (EFS) Information Disclosure Vulnerability

Out-of-bounds read in Windows Encrypting File System (EFS) allows an authorized attacker to disclose information locally.

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

Vendors

Microsoft

Products

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

CVE-2026-59132

Windows TCP/IP Denial of Service Vulnerability

Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service over a network.

CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-59135

Microsoft Windows Search Component Information Disclosure Vulnerability

Weak authentication in Microsoft Windows Search Component allows an authorized attacker to disclose information locally.

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

Vendors

Microsoft

Products

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

CVE-2026-59134

Remote Desktop Client Remote Code Execution Vulnerability

Heap-based buffer overflow 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-2026-59136

Microsoft COM for Windows Information Disclosure Vulnerability

Use of uninitialized resource in Microsoft COM for Windows allows an authorized attacker to disclose information locally.

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

Vendors

Microsoft

Products

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

CVE-2026-59137

Windows Event Logging Service Information Disclosure Vulnerability

Use of uninitialized resource in Windows Event Logging Service allows an authorized attacker to disclose information locally.

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

Vendors

Microsoft

Products

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

CVE-2026-59138

Microsoft Remote Registry Service Denial of Service Vulnerability

Null pointer dereference in Microsoft Remote Registry Service allows an authorized attacker to deny service over a network.

CVSS 3.1 · 6.5 Medium EPSS 1.1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-61345

Microsoft Remote Registry Service Denial of Service Vulnerability

Null pointer dereference in Microsoft Remote Registry Service allows an authorized attacker to deny service over a network.

CVSS 3.1 · 6.5 Medium EPSS 1.1% KEV · Not listed

Vendors

Microsoft

Products

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

Search vulnerabilities

Windows DNS Elevation of Privilege Vulnerability

Windows DNS Elevation of Privilege Vulnerability

Windows DNS Elevation of Privilege Vulnerability

Windows DNS Elevation of Privilege Vulnerability

Windows DNS Elevation of Privilege Vulnerability

Windows DNS Elevation of Privilege Vulnerability

.NET Core Remote Code Execution Vulnerability

Windows LUA File Virtualization Filter Driver Elevation of Privilege Vulnerability

Windows Narrator Braille Elevation of Privilege Vulnerability

Remote Procedure Call Denial of Service Vulnerability

Windows Imaging Component Remote Code Execution Vulnerability

Windows Active Directory Domain Services Remote Code Execution Vulnerability

Windows Encrypting File System (EFS) Information Disclosure Vulnerability

Windows TCP/IP Denial of Service Vulnerability

Microsoft Windows Search Component Information Disclosure Vulnerability

Remote Desktop Client Remote Code Execution Vulnerability

Microsoft COM for Windows Information Disclosure Vulnerability

Windows Event Logging Service Information Disclosure Vulnerability

Microsoft Remote Registry Service Denial of Service Vulnerability

Microsoft Remote Registry Service Denial of Service Vulnerability