Microsoft Windows 11 25H2 vulnerabilities

CVE-2026-42989 [HIGH] CWE-59 CVE-2026-42989: Improper link resolution before file access ('link following') in Winlogon allows an authorized atta Improper link resolution before file access ('link following') in Winlogon allows an authorized attacker to elevate privileges locally.

CVE-2025-58722 [HIGH] CWE-122 CVE-2025-58722: Heap-based buffer overflow in Windows DWM allows an authorized attacker to elevate privileges locall Heap-based buffer overflow in Windows DWM allows an authorized attacker to elevate privileges locally.

CVE-2026-20856 [HIGH] CWE-20 CVE-2026-20856: Improper input validation in Windows Server Update Service allows an unauthorized attacker to execut Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.

CVE-2026-70111 [HIGH] CWE-822 CVE-2026-70111: Untrusted pointer dereference in Windows Kernel allows an unauthorized attacker to elevate privilege Untrusted pointer dereference in Windows Kernel allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-70342 [HIGH] CWE-416 CVE-2026-70342: Use after free in Windows Ancillary Function Driver for WinSock allows an unauthorized attacker to e Use after free in Windows Ancillary Function Driver for WinSock allows an unauthorized attacker to elevate privileges over a network.

CVE-2025-62452 [HIGH] CWE-122 CVE-2025-62452: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network.

CVE-2025-60715 [HIGH] CWE-122 CVE-2025-60715: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to execute code over a network.

CVE-2026-42900 [HIGH] CWE-362 CVE-2026-42900: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-69462 [HIGH] CWE-122 CVE-2026-69462: Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privi Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges over a network.

CVE-2026-68894 [HIGH] CWE-122 CVE-2026-68894: Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privi Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges over a network.

CVE-2026-68876 [HIGH] CWE-122 CVE-2026-68876: Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized a Heap-based buffer overflow in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges over a network.

CVE-2026-69271 [HIGH] CWE-122 CVE-2026-69271: Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privil Heap-based buffer overflow in Microsoft Standard XPS allows an authorized attacker to elevate privileges over a network.

CVE-2026-69363 [HIGH] CWE-122 CVE-2026-69363: Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privi Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges over a network.

CVE-2026-50452 [HIGH] CWE-362 CVE-2026-50452: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-50348 [HIGH] CWE-362 CVE-2026-50348: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an unauthorized attacker to elevate privileges over a network.

CVE-2026-69777 [HIGH] CWE-122 CVE-2026-69777: Heap-based buffer overflow in Windows DHCP Client allows an authorized attacker to elevate privilege Heap-based buffer overflow in Windows DHCP Client allows an authorized attacker to elevate privileges over an adjacent network.

CVE-2026-69455 [HIGH] CWE-122 CVE-2026-69455: Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges locally.

CVE-2026-62783 [HIGH] CWE-122 CVE-2026-62783: Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges locally.

CVE-2026-62758 [HIGH] CWE-122 CVE-2026-62758: Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker Heap-based buffer overflow in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges locally.

CVE-2026-62755 [HIGH] CWE-121 CVE-2026-62755: Stack-based buffer overflow in Windows DHCP Client allows an authorized attacker to elevate privileg Stack-based buffer overflow in Windows DHCP Client allows an authorized attacker to elevate privileges locally.