Microsoft Windows Server 2012 R2 (Server Core installation) vulnerabilities

CVE-2026-83872 High · 7.8 CWE-681 Oct 13, 2026

Windows TCP/IP Local Elevation of Privilege Vulnerability

Incorrect conversion between numeric types in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

CVE-2026-83869 Critical · 9.8 CWE-191 Oct 13, 2026

Windows Domain Name Service Remote Code Execution Vulnerability

Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.

CVE-2026-83865 Medium · 4.7 CWE-23 Oct 13, 2026

Windows Internet (wininet.dll) Tampering Vulnerability

Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering locally.

CVE-2026-83863 High · 7.8 CWE-122 Oct 13, 2026

Servicing Stack Updates Elevation of Privilege Vulnerability

Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.

CVE-2026-83862 Critical · 9.8 CWE-416 Oct 13, 2026

Windows Network Load Balancing Remote Code Execution Vulnerability

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

CVE-2026-83861 High · 7.8 CWE-122 Oct 13, 2026

Windows Remote Desktop Protocol Elevation of Privilege Vulnerability

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

CVE-2026-83860 High · 7.5 CWE-121 Oct 13, 2026

Windows GDI Denial of Service Vulnerability

Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a network.

CVE-2026-83859 High · 7.8 CWE-416 Oct 13, 2026

Windows NTFS Elevation of Privilege Vulnerability

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

CVE-2026-83857 High · 7.8 CWE-121 Oct 13, 2026

Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability

Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-83850 High · 7.8 CWE-122 Oct 13, 2026

Microsoft Windows Search Component Elevation of Privilege Vulnerability

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

CVE-2026-83848 High · 7.8 CWE-822 Oct 13, 2026

Windows COM+ Event System Service Elevation of Privilege Vulnerability

Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83847 High · 7.8 CWE-122 Oct 13, 2026

Microsoft Account Elevation of Privilege Vulnerability

Heap-based buffer overflow in Microsoft Account allows an authorized attacker to elevate privileges locally.

CVE-2026-83843 High · 7.5 CWE-125 Oct 13, 2026

Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability

Out-of-bounds read in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.

CVE-2026-83837 High · 7.8 CWE-441 Oct 13, 2026

Windows Kernel-Mode Drivers Elevation of Privilege Vulnerability

Improper access control in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

CVE-2026-83836 High · 7.8 CWE-122 Oct 13, 2026

Windows Event Tracing Remote Code Execution Vulnerability

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

CVE-2026-83835 Medium · 5.5 CWE-126 Oct 13, 2026

Windows Common Log File System Driver Information Disclosure Vulnerability

Buffer over-read in Windows Common Log File System Driver allows an authorized attacker to disclose information locally.

CVE-2026-83833 High · 7.8 CWE-122 Oct 13, 2026

Windows Kernel Elevation of Privilege Vulnerability

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

CVE-2026-83830 High · 7.8 CWE-122 Oct 13, 2026

Windows COM+ Event System Service Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

CVE-2026-83829 High · 7.8 CWE-122 Oct 13, 2026

Microsoft Windows Search Component Elevation of Privilege Vulnerability

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

CVE-2026-83798 Medium · 5.5 CWE-20 Oct 13, 2026

Windows Update Stack Spoofing Vulnerability

Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform spoofing locally.

CVE-2026-83795 High · 7.5 CWE-122 Oct 13, 2026

Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability

Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attacker to deny service over a network.

CVE-2026-83794 Medium · 5.5 CWE-125 Oct 13, 2026

Windows Portable Device MTP Driver Information Disclosure Vulnerability

Out-of-bounds read in Windows Portable Device MTP Driver allows an authorized attacker to disclose information locally.

CVE-2026-83789 High · 8.8 CWE-122 Oct 13, 2026

Windows SMB Client Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows SMB Client allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-83788 Medium · 4.6 CWE-126 Oct 13, 2026

Windows rndismp6.sys Information Disclosure Vulnerability

Buffer over-read in Windows RNDIS allows an unauthorized attacker to disclose information with a physical attack.

CVE-2026-83787 Medium · 5.5 CWE-288 Oct 13, 2026

Windows DHCP Server Security Feature Bypass Vulnerability

Insufficient verification of data authenticity in Windows DHCP Server allows an authorized attacker to bypass a security feature locally.