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CVE-2009-0091

UnknownEPSS 25.81%

Last modified

CVE-2009-0091 is a vulnerability of currently unknown severity. 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.". EPSS estimates a 25.81% chance of exploitation in the next 30 days.

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

EPSS Probability
25.81%

97.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
MicrosoftWindows 2000All versionsSp4
Microsoft.Net Framework1.1Sp1
Microsoft.Net Framework2.0Sp1
MicrosoftWindows Server 2003All versionsSp2
MicrosoftWindows Server 2008All versions—
Microsoft.Net Framework3.5—
MicrosoftWindows VistaAll versions—
MicrosoftWindows 7All versions—
Microsoft.Net Framework1.0Sp3
MicrosoftWindows XpAll versionsSp2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-0091?
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."
How severe is CVE-2009-0091?
Severity scoring for CVE-2009-0091 is pending analysis. The EPSS model estimates a 25.81% probability of exploitation in the next 30 days.
How do I fix CVE-2009-0091?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-0091?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST