Detections
Analytics
CVE-2026-21218
high
Description
Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21218
Details
Published: 2026-02-10
Updated: 2026-02-12
Risk Information
CVSS v2
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N
Severity: High
CVSS v3
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: High
CVSS v4
Base Score: 8.7
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Severity: High
EPSS
EPSS: 0.00042