Microsoft Windows 11 version 23H2 vulnerabilities

CVE-2026-47291 Critical · 9.8 CWE-122 Jun 9, 2026

HTTP.sys Remote Code Execution Vulnerability

Integer overflow or wraparound in Windows HTTP.sys allows an unauthorized attacker to execute code over a network.

CVE-2026-47289 High · 8.8 CWE-122 Jun 9, 2026

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.

CVE-2026-45658 Medium · 6.8 CWE-284 Jun 9, 2026

Windows BitLocker Security Feature Bypass Vulnerability

Improper access control in Windows BitLocker allows an authorized attacker to bypass a security feature locally.

CVE-2026-45657 Critical · 9.8 CWE-122 Jun 9, 2026

Windows Kernel Remote Code Execution Vulnerability

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

CVE-2026-45656 High · 7.8 CWE-693 Jun 9, 2026

UEFI Secure Boot Security Feature Bypass Vulnerability

Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally.

CVE-2026-45655 Medium · 5.3 CWE-693 Jun 9, 2026

Windows BitLocker Security Feature Bypass Vulnerability

Protection mechanism failure in Windows BitLocker allows an unauthorized attacker to bypass a security feature with a physical attack.

CVE-2026-45653 High · 7.0 CWE-416 Jun 9, 2026

Windows Kernel Elevation of Privilege Vulnerability

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

CVE-2026-45642 Low · 3.9 CWE-20 Jun 9, 2026

Microsoft Azure Attestation service and Device Health Attestation Service Spoofing Vulnerability

Improper input validation in Microsoft Azure Attestation service and Device Health Attestation Service allows an authorized attacker to perform spoofing with a physical attack.

CVE-2026-45641 High · 7.8 CWE-125 Jun 9, 2026

Windows Hyper-V Remote Code Execution Vulnerability

Access of resource using incompatible type ('type confusion') in Windows Hyper-V allows an unauthorized attacker to execute code locally.

CVE-2026-45640 High · 7.0 CWE-416 Jun 9, 2026

Windows Bluetooth Port Driver Elevation of Privilege Vulnerability

Use after free in Windows Bluetooth Port Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-45639 High · 7.5 CWE-125 Jun 9, 2026

Windows Remote Desktop Protocol (RDP) Information Disclosure Vulnerability

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

CVE-2026-45638 High · 7.8 CWE-122 Jun 9, 2026

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

CVE-2026-45637 High · 7.8 CWE-416 Jun 9, 2026

Microsoft DWM Core Library Elevation of Privilege Vulnerability

Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-45636 High · 7.8 CWE-20 Jun 9, 2026

Windows NTFS Remote Code Execution Vulnerability

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

CVE-2026-45635 High · 8.1 CWE-416 Jun 9, 2026

Windows UPnP Device Host Remote Code Execution Vulnerability

Access of resource using incompatible type ('type confusion') in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.

CVE-2026-45634 Medium · 5.5 CWE-125 Jun 9, 2026

Windows DHCP Client Information Disclosure Vulnerability

Out-of-bounds read in Windows DHCP Server allows an authorized attacker to disclose information locally.

CVE-2026-45608 Medium · 6.8 CWE-125 Jun 9, 2026

Windows DHCP Client Information Disclosure Vulnerability

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

CVE-2026-45607 High · 7.8 CWE-125 Jun 9, 2026

Windows Hyper-V Remote Code Execution Vulnerability

Out-of-bounds read in Windows Hyper-V allows an unauthorized attacker to execute code locally.

CVE-2026-45606 Medium · 5.5 CWE-125 Jun 9, 2026

Microsoft UxTheme Library (uxtheme.dll) Denial of Service Vulnerability

Out-of-bounds read in Microsoft UxTheme Library (uxtheme.dll) allows an authorized attacker to deny service locally.

CVE-2026-45605 High · 7.8 CWE-416 Jun 9, 2026

Windows Bluetooth Service Elevation of Privilege Vulnerability

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

CVE-2026-45604 Medium · 5.5 CWE-125 Jun 9, 2026

Windows Managed Installer Information Disclosure Vulnerability

Out-of-bounds read in Windows Application Identity (AppID) Subsystem allows an authorized attacker to disclose information locally.

CVE-2026-45603 High · 7.0 CWE-416 Jun 9, 2026

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

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

CVE-2026-45602 Critical · 9.1 CWE-349 Jun 9, 2026

Windows Dynamic Host Configuration Protocol (DHCP) Tampering Vulnerability

No cwe for this issue in Windows DHCP Server allows an unauthorized attacker to perform tampering over a network.

CVE-2026-45601 High · 7.0 CWE-362 Jun 9, 2026

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

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

CVE-2026-45599 High · 8.1 CWE-416 Jun 9, 2026

Windows UPnP Device Host Remote Code Execution Vulnerability

Use after free in Universal Plug and Play (upnp.dll) allows an unauthorized attacker to execute code over a network.