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High severity7.0NVD Advisory· Published Jul 14, 2026· Updated Jul 22, 2026

CVE-2026-50459

CVE-2026-50459

Description

Use after free in Windows Kernel allows an unauthorized attacker to elevate privileges locally.

Affected products

9
  • Microsoft/Windows 10 16072 versions
    cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*range: <10.0.19044.7548
    • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*range: <10.0.19045.7548
  • Microsoft/Windows 11 24h2
    cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*
    Range: <10.0.26100.8875
  • Microsoft/Windows 11 25h2
    cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*
    Range: <10.0.26200.8875
  • 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: <10.0.28000.2525
    • 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: <10.0.20348.5386
  • Microsoft/Windows Server 2025
    cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
    Range: <10.0.26100.33158
  • Microsoft/Windows Kernelllm-fuzzy

Patches

Vulnerability mechanics

References

1

News mentions

0

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