CVE-2026-20804

Windows Hello Tampering Vulnerability

Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 15 more

CVE-2026-20805

Desktop Window Manager Information Disclosure Vulnerability

Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.

CVSS 3.1 · 5.5 Medium EPSS 7.5% KEV · Listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 17 more

CVE-2026-20811

Win32k Elevation of Privilege Vulnerability

Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

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

Vendors

Microsoft

Products

Windows 11 23h2 Windows 11 23h2 Windows 11 24h2 and 7 more

CVE-2026-20812

LDAP Tampering Vulnerability

Improper input validation in Windows LDAP - Lightweight Directory Access Protocol allows an authorized attacker to perform tampering 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 15 more

CVE-2026-20814

DirectX Graphics Kernel Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel 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 15 more

CVE-2026-20816

Windows Installer Elevation of Privilege Vulnerability

Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS 2.4% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-20821

Remote Procedure Call Information Disclosure Vulnerability

Exposure of sensitive information to an unauthorized actor in Windows Remote Procedure Call allows an unauthorized attacker to disclose information locally.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-20822

Windows Graphics Component Elevation of Privilege Vulnerability

Use after free in Microsoft Graphics Component 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 15 more

CVE-2026-20825

Windows Hyper-V Information Disclosure Vulnerability

Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally.

CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1809 Windows 10 21h2 Windows 10 21h2 and 13 more

CVE-2026-20826

Tablet Windows User Interface (TWINUI) Subsystem Information Disclosure Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Tablet Windows User Interface (TWINUI) Subsystem 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 15 more

CVE-2026-20828

Windows rndismp6.sys Information Disclosure Vulnerability

Out-of-bounds read in Windows Internet Connection Sharing (ICS) allows an unauthorized attacker to disclose information with a physical attack.

CVSS 3.1 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-20832

Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability

Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability

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

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 15 more

CVE-2026-20833

Windows Kerberos Information Disclosure Vulnerability

Use of a broken or risky cryptographic algorithm in Windows Kerberos allows an authorized attacker to disclose information locally.

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

Vendors

Microsoft

Products

Windows Server 2008 Windows Server 2008 R2 Windows Server 2008 Sp2 and 8 more

CVE-2026-20834

Windows Spoofing Vulnerability

Absolute path traversal in Windows Shell allows an unauthorized attacker to perform spoofing with a physical attack.

CVSS 3.1 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-20835

Capability Access Management Service (camsvc) Information Disclosure Vulnerability

Out-of-bounds read in Capability Access Management Service (camsvc) allows an authorized attacker to disclose information 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 4 more

CVE-2026-20837

Windows Media Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code 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 13 more

CVE-2026-20839

Windows Client-Side Caching (CSC) Service Information Disclosure Vulnerability

Improper access control in Windows Client-Side Caching (CSC) 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 19 more

CVE-2026-20842

Microsoft DWM Core Library Elevation of Privilege Vulnerability

Use after free in Windows DWM 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 11 more

CVE-2026-20847

Microsoft Windows File Explorer Spoofing Vulnerability

Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to perform spoofing over a network.

CVSS 3.1 · 6.5 Medium EPSS 1.3% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 19 more

CVE-2026-20852

Windows Hello Tampering Vulnerability

Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows 10 21h2 and 15 more