Microsoft Windows 11 Version 26H1 vulnerabilities

CVE-2026-70229 [HIGH] CWE-863 CVE-2026-70229: Incorrect authorization in Active Directory Domain Services allows an unauthorized attacker to execu Incorrect authorization in Active Directory Domain Services allows an unauthorized attacker to execute code over a network.

CVE-2026-62792 [HIGH] CWE-121 CVE-2026-62792: Stack-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to execute code over a Stack-based buffer overflow in Windows TCP/IP allows an unauthorized attacker to execute code over a network.

CVE-2026-56649 [HIGH] CWE-362 CVE-2026-56649: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Network File System allows an unauthorized attacker to execute code over a network.

CVE-2026-105008 [CRITICAL] CWE-420 CVE-2026-105008: No cwe for this issue in Windows Schannel allows an unauthorized attacker to perform spoofing over a No cwe for this issue in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.

CVE-2026-108463 [HIGH] CWE-41 CVE-2026-108463: Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to by Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.

CVE-2026-47289 [HIGH] CWE-122 CVE-2026-47289: Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-73018 [HIGH] CWE-122 CVE-2026-73018: Heap-based buffer overflow in Graphic Fonts allows an unauthorized attacker to execute code over a n Heap-based buffer overflow in Graphic Fonts allows an unauthorized attacker to execute code over a network.

CVE-2026-83998 [HIGH] CWE-122 CVE-2026-83998: Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-72986 [HIGH] CWE-122 CVE-2026-72986: Heap-based buffer overflow in Graphic Fonts allows an unauthorized attacker to execute code over a n Heap-based buffer overflow in Graphic Fonts allows an unauthorized attacker to execute code over a network.

CVE-2026-68828 [HIGH] CWE-122 CVE-2026-68828: Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-62785 [HIGH] CWE-122 CVE-2026-62785: Heap-based buffer overflow in Windows LDAP - Lightweight Directory Access Protocol allows an unautho Heap-based buffer overflow in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to execute code over a network.

CVE-2026-54990 [HIGH] CWE-122 CVE-2026-54990: Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

CVE-2026-85817 [HIGH] CWE-807 CVE-2026-85817: Reliance on untrusted inputs in a security decision in Windows PowerShell allows an unauthorized att Reliance on untrusted inputs in a security decision in Windows PowerShell allows an unauthorized attacker to execute code over a network.

CVE-2026-88116 [HIGH] CWE-822 CVE-2026-88116: Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a n Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

CVE-2026-88112 [HIGH] CWE-822 CVE-2026-88112: Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a n Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

CVE-2026-85903 [HIGH] CWE-822 CVE-2026-85903: Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a n Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

CVE-2026-88114 [HIGH] CWE-822 CVE-2026-88114: Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a n Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.

CVE-2026-83929 [HIGH] CWE-787 CVE-2026-83929: Out-of-bounds write in Windows GDI allows an unauthorized attacker to execute code over a network. Out-of-bounds write in Windows GDI allows an unauthorized attacker to execute code over a network.

CVE-2026-62816 [HIGH] CWE-122 CVE-2026-62816: Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized at Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.

CVE-2026-54982 [HIGH] CWE-191 CVE-2026-54982: Integer underflow (wrap or wraparound) in Reliable Multicast Transport Driver (RMCAST) allows an una Integer underflow (wrap or wraparound) in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.