CyberICT

CVE-2026-55144

Microsoft · Published July 14, 2026

CVSS v3.1

HIGH
Patch availableGet patch

Description

Windows Cryptography API: Next Generation (CNG) Tampering Vulnerability. Missing cryptographic step in Windows CryptoAPI allows an authorized attacker to perform tampering locally.

Affected Products

  • Windows Server 2022
  • Windows Server 2025 (Server Core installation)
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems

CVSS Vector

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