HarborGuard / CVE
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HIGHCVE-2026-21218Published Modified CNA microsoft

CVE-2026-21218: .NET Spoofing Vulnerability

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

Metrics

CVSS v3.1
7.5
Severity
HIGH
Fixed in
8.0.24
Affected Products
3

Fix available

8.0.249.0.1310.0.3
Patch commits
Affected packages
  • Microsoft / .NET 10.0
    < 10.0.3 (from 10.0.0)
  • Microsoft / .NET 8.0
    < 8.0.24 (from 8.0.0)
  • Microsoft / .NET 9.0
    < 9.0.13 (from 9.0.0)
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
References