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High severity7.8NVD Advisory· Published Aug 11, 2026· Updated Aug 13, 2026

CVE-2026-62799

CVE-2026-62799

Description

Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.

Affected products

3
  • Microsoft/Windows SMB Clientllm-fuzzy
  • 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: <10.0.28000.2704
    • cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*range: <10.0.28000.2704

Patches

Vulnerability mechanics

References

1

News mentions

2