Microsoft Windows 10 21H2 vulnerabilities

CVE-2026-54983 [HIGH] CWE-121 CVE-2026-54983: Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized a Stack-based buffer overflow in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

CVE-2026-50696 [HIGH] CWE-122 CVE-2026-50696: Heap-based buffer overflow in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized at Heap-based buffer overflow in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.

CVE-2025-29969 [HIGH] CWE-367 CVE-2025-29969: Time-of-check time-of-use (toctou) race condition in Windows Fundamentals allows an authorized attac Time-of-check time-of-use (toctou) race condition in Windows Fundamentals allows an authorized attacker to execute code over a network.

CVE-2026-87716 [HIGH] CWE-122 CVE-2026-87716: Heap-based buffer overflow in Windows Storage Spaces Controller allows an unauthorized attacker to d Heap-based buffer overflow in Windows Storage Spaces Controller allows an unauthorized attacker to deny service over a network.

CVE-2026-58530 [HIGH] CWE-122 CVE-2026-58530: Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker t Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.

CVE-2026-102227 [HIGH] CWE-122 CVE-2026-102227: Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.

CVE-2026-70580 [HIGH] CWE-306 CVE-2026-70580: Missing authentication for critical function in Windows Credential Guard allows an authorized attack Missing authentication for critical function in Windows Credential Guard allows an authorized attacker to perform spoofing locally.

CVE-2026-69758 [HIGH] CWE-122 CVE-2026-69758: Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an auth Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-69541 [HIGH] CWE-122 CVE-2026-69541: 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 locally.

CVE-2026-69467 [HIGH] CWE-121 CVE-2026-69467: Stack-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate Stack-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

CVE-2026-69592 [HIGH] CWE-122 CVE-2026-69592: Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an auth Heap-based buffer overflow in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.

CVE-2026-69436 [HIGH] CWE-122 CVE-2026-69436: Heap-based buffer overflow in Windows State Repository Service allows an authorized attacker to elev Heap-based buffer overflow in Windows State Repository Service allows an authorized attacker to elevate privileges locally.

CVE-2026-84000 [HIGH] CWE-122 CVE-2026-84000: Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to execute Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to execute code locally.

CVE-2026-62894 [HIGH] CWE-122 CVE-2026-62894: Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate priv Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CVE-2026-62713 [HIGH] CWE-122 CVE-2026-62713: Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker t Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-62771 [HIGH] CWE-122 CVE-2026-62771: Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker t Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.

CVE-2026-49793 [HIGH] CWE-122 CVE-2026-49793: Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.

CVE-2026-58534 [HIGH] CWE-122 CVE-2026-58534: Heap-based buffer overflow in Microsoft Input Method Editor (IME) allows an authorized attacker to e Heap-based buffer overflow in Microsoft Input Method Editor (IME) allows an authorized attacker to elevate privileges locally.

CVE-2026-69534 [HIGH] CWE-77 CVE-2026-69534: Improper neutralization of special elements used in a command ('command injection') in Windows Progr Improper neutralization of special elements used in a command ('command injection') in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.

CVE-2026-50451 [HIGH] CWE-306 CVE-2026-50451: Missing authentication for critical function in Windows Routing and Remote Access Service (RRAS) all Missing authentication for critical function in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.