CyberICT

CVE-2026-83789

Microsoft · Published October 13, 2026

CVSS v3.1

CRITICAL
Patch availableGet patch

Description

Heap-based buffer overflow in Windows SMB Client allows an unauthorized attacker to elevate privileges over a network.

Affected Products

  • Windows 10 1607 < 10.0.14393.9612
  • Windows 10 1809 < 10.0.17763.9376
  • Windows 10 21h2 < 10.0.19044.7807
  • Windows 10 22h2 < 10.0.19045.7807

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H