Microsoft Windows 11 Version 26H1 vulnerabilities

CVE-2026-69634 [CRITICAL] CWE-122 CVE-2026-69634: Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to execute code over a n Heap-based buffer overflow in Windows iSCSI allows an unauthorized attacker to execute code over a network.

CVE-2026-69639 [CRITICAL] CWE-122 CVE-2026-69639: Heap-based buffer overflow in Windows Libarchive allows an unauthorized attacker to execute code ove Heap-based buffer overflow in Windows Libarchive allows an unauthorized attacker to execute code over a network.

CVE-2026-85814 [CRITICAL] CWE-122 CVE-2026-85814: Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to Heap-based buffer overflow in Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.

CVE-2026-96219 [CRITICAL] CWE-787 CVE-2026-96219: Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthor Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.

CVE-2026-54995 [CRITICAL] CWE-416 CVE-2026-54995: Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to ex Use after free in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over a network.

CVE-2026-70158 [HIGH] CWE-415 CVE-2026-70158: Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine

CVE-2026-69628 [HIGH] CWE-122 CVE-2026-69628: Heap-based buffer overflow in Windows iSCSI allows an authorized attacker to execute code over a net Heap-based buffer overflow in Windows iSCSI allows an authorized attacker to execute code over a network.

CVE-2026-72959 [HIGH] CWE-122 CVE-2026-72959: Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an Remote Code Execution in Windows Routing and Remote Access Service (RRAS) allows attacker to gain an unauthorized access to victim's machine

CVE-2026-69729 [HIGH] CWE-122 CVE-2026-69729: Heap-based buffer overflow in Windows Credential Providers allows an authorized attacker to execute Heap-based buffer overflow in Windows Credential Providers allows an authorized attacker to execute code over a network.

CVE-2026-56647 [HIGH] CWE-190 CVE-2026-56647: Integer overflow or wraparound in Windows Remote Access Service Infrastructure allows an authorized Integer overflow or wraparound in Windows Remote Access Service Infrastructure allows an authorized attacker to elevate privileges over a network.

CVE-2026-69681 [HIGH] CWE-122 CVE-2026-69681: Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker Heap-based buffer overflow in Virtual Hard Disk (VHD) Miniport Driver allows an authorized attacker to elevate privileges over a network.

CVE-2026-57092 [CRITICAL] CWE-416 CVE-2026-57092: Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a networ Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network.

CVE-2026-83770 [CRITICAL] CWE-122 CVE-2026-83770: Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code o Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.

CVE-2026-70147 [CRITICAL] CWE-122 CVE-2026-70147: Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to execute code over a network.

CVE-2026-70153 [CRITICAL] CWE-122 CVE-2026-70153: Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to Heap-based buffer overflow in Microsoft PostScript Printer Driver allows an unauthorized attacker to execute code over a network.

CVE-2026-97814 [CRITICAL] CWE-122 CVE-2026-97814: Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code o Heap-based buffer overflow in Windows Text Shaping allows an unauthorized attacker to execute code over a network.

CVE-2026-70096 [CRITICAL] CWE-122 CVE-2026-70096: Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to exec Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to execute code over a network.

CVE-2026-70157 [CRITICAL] CWE-122 CVE-2026-70157: Heap-based buffer overflow in Windows System Information Console allows an unauthorized attacker to Heap-based buffer overflow in Windows System Information Console allows an unauthorized attacker to execute code over a network.

CVE-2026-96924 [CRITICAL] CWE-822 CVE-2026-96924: Untrusted pointer dereference in Windows OLE allows an unauthorized attacker to execute code over a Untrusted pointer dereference in Windows OLE allows an unauthorized attacker to execute code over a network.

CVE-2026-97816 [CRITICAL] CWE-416 CVE-2026-97816: Use after free in OpenSSH for Windows allows an unauthorized attacker to execute code over a network Use after free in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.