{"id":"CVE-2011-1253","aliases":["EUVD-2011-1261","GHSA-93jp-mm4x-pff3"],"status":"published","title":"Microsoft .NET Framework 1.0 SP3, 1.1 SP1, 2.0 SP2, 3.5.1, and 4, and Silverlight 4 before 4.0...","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.\"","severity":{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.13241,"percentile":0.96404,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2011-10-12T01:00:00Z","modified":"2026-06-16T23:29:01Z","products":[{"vendor":"microsoft","product":".net_framework"},{"vendor":"microsoft","product":"silverlight"}],"references":[{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-078","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13069","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1253"},{"url":"https://github.com/advisories/GHSA-93jp-mm4x-pff3"}],"sources":{"cve":[{"id":"CVE-2011-1253","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.\"","status":"published","published":"2011-10-12T01:00:00Z","modified":"2024-08-06T22:21:33.528Z","updated_at":"2026-11-02T14:35:38.321377Z"}],"euvd":[{"id":"EUVD-2011-1261","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.\"","status":"published","published":"2011-10-12T01:00:00Z","modified":"2024-08-06T22:21:33Z","updated_at":"2026-11-03T01:55:57.223544Z"}],"ghsa":[{"id":"GHSA-93jp-mm4x-pff3","title":"Microsoft .NET Framework 1.0 SP3, 1.1 SP1, 2.0 SP2, 3.5.1, and 4, and Silverlight 4 before 4.0...","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.\"","status":"published","published":"2022-05-13T01:15:29Z","modified":"2023-02-01T05:04:44Z","updated_at":"2026-11-02T14:50:10.892175Z"}],"nvd":[{"id":"CVE-2011-1253","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.\"","status":"published","published":"2011-10-12T02:52:43.283Z","modified":"2026-06-16T23:29:01.72Z","cvss":[{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:02:10.769216Z"}]}}