CVE-2011-1253

critical Microsoft
CVSS v3 Base Score
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C
EPSS Score
19.5%
Exploitation probability in 30 days
Top 5% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
M
Confidentiality
C
Integrity
C
Availability
C
Published: October 12, 2011 (5329 days ago)
Last Modified: April 29, 2026
Vendor: Microsoft
Source: NVD

Description

Microsoft .NET Framework 1.0 SP3, 1.1 SP1, 2.0 SP2, 3.5.1, and 4, and Silverlight 4 before 4.0.60831, does not properly restrict inheritance, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, (3) a crafted .NET Framework application, or (4) a crafted Silverlight application, aka ".NET Framework Class Inheritance Vulnerability."

CWE

CWE-264

Affected Products

microsoft .net frameworkmicrosoft silverlight

References

🔗 docs.microsoft.com 🔗 oval.cisecurity.org 🔗 docs.microsoft.com 🔗 oval.cisecurity.org