CyberICT

CVE-2026-21218

Microsoft · Published February 10, 2026

CVSS v3.1

HIGH
Patch availableGet patch

Description

.NET Spoofing Vulnerability. Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.

Affected Products

  • .NET 10.0 installed on Mac OS
  • .NET 10.0 installed on Windows
  • .NET 8.0 installed on Linux
  • .NET 8.0 installed on Windows

CVSS Vector

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