Skip to content

Known vulnerabilities in Microsoft Windows Server 2012 R2 (Server Core installation)

Is your version affected?

CVE Summary Score Published
CVE-2026-50402 Incorrect conversion between numeric types in Windows NTFS allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50435 Buffer over-read in Windows Overlay Filter allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50455 Use of uninitialized resource in Universal Plug and Play (upnp.dll) allows an authorized attacker to disclose… 5.5 Medium Jul 14, 2026
CVE-2026-50451 Missing authentication for critical function in Windows Routing and Remote Access Service (RRAS) allows an authorized… 7.1 High Jul 14, 2026
CVE-2026-50422 Out-of-bounds read in Windows NTFS allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50426 Relative path traversal in DNS Server allows an authorized attacker to execute code over an adjacent network 6.8 Medium Jul 14, 2026
CVE-2026-50365 Improper authentication in Windows RPC API allows an unauthorized attacker to elevate privileges over an adjacent… 8.0 High Jul 14, 2026
CVE-2026-50369 Use after free in Windows Remote Desktop Services allows an authorized attacker to elevate privileges over a network 8.8 High Jul 14, 2026
CVE-2026-50471 Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally 7.8 High Jul 14, 2026
CVE-2026-50352 Exposure of sensitive information to an unauthorized actor in Windows Cryptographic Services allows an authorized… 5.5 Medium Jul 14, 2026
CVE-2026-50344 Improper authorization in Windows OLE allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50445 Buffer over-read in Windows RDP allows an unauthorized attacker to disclose information over a network 6.5 Medium Jul 14, 2026
CVE-2026-50334 Exposure of sensitive information to an unauthorized actor in Windows Notification allows an authorized attacker to… 5.5 Medium Jul 14, 2026
CVE-2026-50387 Stack-based buffer overflow in Windows GDI allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50448 Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally 7.8 High Jul 14, 2026
CVE-2026-50405 Insufficient granularity of access control in Windows Filtering Platform (WFP) allows an authorized attacker to… 7.8 High Jul 14, 2026
CVE-2026-50397 Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally 7.0 High Jul 14, 2026
CVE-2026-50346 Improper authorization in RPC Runtime allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50376 Use of uninitialized resource in Windows RDP allows an unauthorized attacker to disclose information over a network 6.5 Medium Jul 14, 2026
CVE-2026-50391 Improper privilege management in Windows Group Policy allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50433 Use after free in Windows Media allows an authorized attacker to elevate privileges locally 7.8 High Jul 14, 2026
CVE-2026-50371 Concurrent execution using shared resource with improper synchronization ('race condition') in Windows LUAFV allows an… 7.0 High Jul 14, 2026
CVE-2026-50388 Out-of-bounds read in Windows NTFS allows an unauthorized attacker to execute code locally 7.8 High Jul 14, 2026
CVE-2026-50355 Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over… 7.5 High Jul 14, 2026
CVE-2026-50366 Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a… 6.5 Medium Jul 14, 2026

Other Microsoft products