CVE-2026-21218

Summary

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

Affected Software

VendorProductVersion RangeStatus
Microsoft.NET 10.010.0.0 < 10.0.3affected
Microsoft.NET 8.08.0.0 < 8.0.24affected
Microsoft.NET 9.09.0.0 < 9.0.13affected

Weaknesses

  • CWE-166: CWE-166: Improper Handling of Missing Special Element

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References