CVE-2009-0091

CriticalCVSS 9.3/10Last modified Jun 16, 2026

Description

Microsoft .NET Framework 2.0, 2.0 SP1, and 3.5 does not properly enforce a certain type-equality constraint in .NET verifiable code, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (XBAP), (2) a crafted ASP.NET application, or (3) a crafted .NET Framework application, aka "Microsoft .NET Framework Type Verification Vulnerability."

Metrics

CVSS 2.0 9.3/10AV:N/AC:M/Au:N/C:C/I:C/A:C

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Oct 14, 2009
Last modified
Jun 16, 2026
NVD status
Modified

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CVE-2009-0091: Critical severity, CVSS 9.3 | Vulnix