CVE-2026-83779

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 25 more

CVE-2026-83780

Windows CCFFilter Driver Remote Code Execution Vulnerability

Use after free in Windows CCFFilter Driver allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 9.8 Critical EPSS 1.1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows Server 2016 and 6 more

CVE-2026-83782

Windows Shell Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Shell allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 25 more

CVE-2026-83783

Windows Management Instrumentation Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Management Instrumentation 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 25 more

CVE-2026-85908

Windows Graphics Component Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

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

Vendors

Microsoft

Products

Office Office 365 Office Macos 2021 and 29 more

CVE-2026-83651

Windows GDI Information Disclosure Vulnerability

Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information over a network.

CVSS 3.1 · 6.5 Medium EPSS 1.0% KEV · Not listed

Vendors

Microsoft

Products

Office Office 365 Office Macos 2021 and 29 more

CVE-2026-70211

Win32k Information Disclosure Vulnerability

Out-of-bounds read in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.

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

Vendors

Microsoft

Products

Office Office 365 Office Macos 2021 and 29 more

CVE-2026-70271

Windows Win32k Elevation of Privilege Vulnerability

Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

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

Vendors

Microsoft

Products

Office Windows 10 1607 Windows 10 1809 and 26 more

CVE-2026-70106

Windows Kernel Elevation of Privilege Vulnerability

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

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

Vendors

Microsoft

Products

Office 365 Windows 10 1607 Windows 10 1809 and 26 more

CVE-2026-88137

WebDAV Information Disclosure Vulnerability

Files or directories accessible to external parties in WebDAV allows an authorized attacker to disclose information over a network.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 25 more

CVE-2026-88158

Microsoft Digest Authentication Information Disclosure Vulnerability

Out-of-bounds read in Microsoft Digest Authentication 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 25 more

CVE-2026-77491

Windows GDI Information Disclosure Vulnerability

Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information locally.

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

Vendors

Microsoft

Products

Office Office 365 Office Macos 2021 and 27 more

CVE-2026-83699

Windows Client-Side Caching (CSC) Service Elevation of Privilege Vulnerability

Stack-based buffer overflow in Windows Client-Side Caching (CSC) 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 25 more

CVE-2026-83698

Windows Client-Side Caching (CSC) Service Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Client-Side Caching (CSC) 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 25 more

CVE-2026-83695

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 25 more

CVE-2026-83722

Microsoft Local Security Authority (LSA) Server Elevation of Privilege Vulnerability

Use after free in Microsoft Local Security Authority Server (lsasrv) 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 25 more

CVE-2026-69966

Kernel Streaming Service Driver Elevation of Privilege Vulnerability

Integer overflow or wraparound in Microsoft Streaming 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 25 more

CVE-2026-69967

Windows Overlay Filter Information Disclosure Vulnerability

Out-of-bounds read in Windows Overlay Filter 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 25 more

CVE-2026-83666

Active Directory Certificate Services (AD CS) Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Active Directory Certificate Services (AD CS) 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 Server 2012 and 11 more

CVE-2026-83667

Windows Active Directory Domain Services Denial of Service Vulnerability

Out-of-bounds read in Active Directory Domain Services allows an authorized attacker to deny service over a network.

CVSS 3.1 · 6.5 Medium EPSS 1.2% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 25 more