7.5

CVE-2026-21218

.NET Spoofing Vulnerability

Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ .Net Version >= 8.0.0 < 8.0.24
   Apple ≫ macOS Version-
   Linux ≫ Linux Kernel Version-
   Microsoft ≫ Windows Version-
Microsoft ≫ .Net Version >= 9.0.0 < 9.0.13
   Apple ≫ macOS Version-
   Linux ≫ Linux Kernel Version-
   Microsoft ≫ Windows Version-
Microsoft ≫ .Net Version >= 10.0.0 < 10.0.3
   Apple ≫ macOS Version-
   Linux ≫ Linux Kernel Version-
   Microsoft ≫ Windows Version-
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.02% 0.587
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
secure@microsoft.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-166 Improper Handling of Missing Special Element

The product receives input from an upstream component, but it does not handle or incorrectly handles when an expected special element is missing.

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21218
Vendor Advisory