Critical severity9.8NVD Advisory· Published Jun 9, 2026· Updated Jun 10, 2026

CVE-2026-45657

Description

Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.

Microsoft/Windows 11 23h22 versions
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*+ 1 more
- cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*range: <10.0.22631.7219
- cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*range: <10.0.22631.7219
Microsoft/Windows 11 24h22 versions
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*+ 1 more
- cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*range: <10.0.26100.8655
- cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*range: <10.0.26100.8655
Microsoft/Windows 11 25h22 versions
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*+ 1 more
- cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*range: <10.0.26200.8655
- cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*range: <10.0.26200.8655
Microsoft/Windows 11 26h12 versions
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*+ 1 more
- cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*range: <10.0.28000.2269
- cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*range: <10.0.28000.2269
Microsoft/Windows Server 2003
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
Range: <10.0.20348.5256
Microsoft/Windows Server 2025
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*
Range: <10.0.26100.32995
Microsoft/Windows Kernelllm-fuzzy