{"cve":{"cve_id":"CVE-2011-1253","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.13241,"epss_percentile":0.95879,"epss_as_of":"2026-06-23","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.\"","published_at":"2011-10-12T01:00:00Z","last_modified_at":"2026-06-16T23:29:01.720000Z","cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-264"],"nvd_references":["https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-078","https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13069"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:05:49.363198Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":".net-framework","product_name":".net_framework","version_start":"1.0","version_start_inclusive":true,"version_end":"1.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:.net_framework:1.0:sp3:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":".net-framework","product_name":".net_framework","version_start":"1.1","version_start_inclusive":true,"version_end":"1.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:.net_framework:1.1:sp1:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":".net-framework","product_name":".net_framework","version_start":"2.0","version_start_inclusive":true,"version_end":"2.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":".net-framework","product_name":".net_framework","version_start":"3.5.1","version_start_inclusive":true,"version_end":"3.5.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":".net-framework","product_name":".net_framework","version_start":"4.0","version_start_inclusive":true,"version_end":"4.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:.net_framework:4.0:*:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"silverlight","product_name":"silverlight","version_start":"4.0.60531.0","version_start_inclusive":true,"version_end":"4.0.60531.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:silverlight:4.0.60531.0:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-078","source_type":"MISC","tags":[]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13069","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2011-10-12T01:00:00Z","label":"CVE published","source":null}]}