CVE-2026-54986

Windows Win32k Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Win32K 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 16 more

CVE-2026-54993

Microsoft Windows Media Foundation Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Windows Media Foundation 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-2026-55001

Active Directory Domain Services Elevation of Privilege Vulnerability

Improper certificate validation in Windows Active Directory 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 Server 2016 and 6 more

CVE-2026-55004

Windows Print Configuration Elevation of Privilege Vulnerability

Double free in Microsoft Printer Drivers 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-2026-54992

Microsoft Message Queuing Queue Manager Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Message Queuing Queue Manager allows an unauthorized attacker to execute code locally.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-54109

Windows Resilient File System (ReFS) Remote Code Execution Vulnerability

Integer overflow or wraparound in Windows Resilient File System (ReFS) allows an authorized 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 16 more

CVE-2026-54982

Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability

Integer underflow (wrap or wraparound) in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent 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 21 more

CVE-2026-54114

Windows Win32k Elevation of Privilege Vulnerability

Use after free in Windows Win32K 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 13 more

CVE-2026-54996

Windows USB Print Driver Elevation of Privilege Vulnerability

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

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

Vendors

Microsoft

Products

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

CVE-2026-54119

Windows Active Directory Denial of Service Vulnerability

Loop with unreachable exit condition ('infinite loop') in Windows Active Directory 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 21 more

CVE-2026-54997

Windows SMB Information Disclosure Vulnerability

Use of uninitialized resource in Windows SMB 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 21 more

CVE-2026-54999

Windows TCP/IP Remote Code Execution Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over an adjacent 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 21 more

CVE-2026-55003

Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability

Use of uninitialized resource in Windows RDP allows an unauthorized 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 21 more

CVE-2026-54995

Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability

Use after free in Reliable Multicast Transport Driver (RMCAST) 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 1607 Windows 10 1809 Windows 10 21h2 and 21 more

CVE-2026-54122

Windows GDI+ Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code locally.

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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

CVE-2026-55144

Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability

Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 11 24h2 Windows 11 24h2 Windows 11 25h2 and 6 more

CVE-2026-56155

Active Directory Federation Services Elevation of Privilege Vulnerability

Insufficient granularity of access control in Active Directory Federation Services (AD FS) allows an authorized attacker to elevate privileges locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Listed

Vendors

Microsoft

Products

Windows 10 1607 Windows 10 1809 Windows Server 2012 and 11 more

CVE-2026-50694

Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability

Use after free in Windows Secure Socket Tunneling Protocol (SSTP) 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 1607 Windows 10 1809 Windows 10 21h2 and 21 more

CVE-2026-54127

Windows Hyper-V Elevation of Privilege Vulnerability

Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Windows 11 24h2 Windows 11 24h2 Windows 11 25h2 and 6 more

CVE-2026-57097

Microsoft XML Security Feature Bypass Vulnerability

Untrusted search path in Microsoft XML allows an unauthorized attacker to bypass a security feature with a physical attack.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

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