{"id":"CVE-2012-4777","aliases":["EUVD-2012-4702","GHSA-69xc-62mc-6v46"],"status":"published","title":"The code-optimization feature in the reflection implementation in Microsoft .NET Framework 4 and...","description":"The code-optimization feature in the reflection implementation in Microsoft .NET Framework 4 and 4.5 does not properly enforce object permissions, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP) or (2) a crafted .NET Framework application, aka \"WPF Reflection Optimization 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":"2026-11-08","score":0.24755,"percentile":0.97913,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2012-11-14T00:00:00Z","modified":"2026-06-16T23:45:42Z","products":[{"vendor":"microsoft","product":".net_framework"}],"references":[{"url":"http://www.us-cert.gov/cas/techalerts/TA12-318A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-074","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15960","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://osvdb.org/87267","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.securityfocus.com/bid/56464","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://secunia.com/advisories/51236","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://www.securitytracker.com/id?1027753","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-4777"},{"url":"https://github.com/advisories/GHSA-69xc-62mc-6v46"}],"sources":{"cve":[{"id":"CVE-2012-4777","description":"The code-optimization feature in the reflection implementation in Microsoft .NET Framework 4 and 4.5 does not properly enforce object permissions, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP) or (2) a crafted .NET Framework application, aka \"WPF Reflection Optimization Vulnerability.\"","status":"published","published":"2012-11-14T00:00:00Z","modified":"2024-08-06T20:50:16.887Z","updated_at":"2026-11-02T14:34:51.584538Z"}],"euvd":[{"id":"EUVD-2012-4702","description":"The code-optimization feature in the reflection implementation in Microsoft .NET Framework 4 and 4.5 does not properly enforce object permissions, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP) or (2) a crafted .NET Framework application, aka \"WPF Reflection Optimization Vulnerability.\"","status":"published","published":"2012-11-14T00:00:00Z","modified":"2024-08-06T20:50:16Z","updated_at":"2026-11-03T01:56:06.845275Z"}],"ghsa":[{"id":"GHSA-69xc-62mc-6v46","title":"The code-optimization feature in the reflection implementation in Microsoft .NET Framework 4 and...","description":"The code-optimization feature in the reflection implementation in Microsoft .NET Framework 4 and 4.5 does not properly enforce object permissions, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP) or (2) a crafted .NET Framework application, aka \"WPF Reflection Optimization Vulnerability.\"","status":"published","published":"2022-05-13T01:15:42Z","modified":"2023-02-01T05:04:36Z","updated_at":"2026-11-02T14:50:09.90532Z"}],"nvd":[{"id":"CVE-2012-4777","description":"The code-optimization feature in the reflection implementation in Microsoft .NET Framework 4 and 4.5 does not properly enforce object permissions, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP) or (2) a crafted .NET Framework application, aka \"WPF Reflection Optimization Vulnerability.\"","status":"published","published":"2012-11-14T00:55:01.78Z","modified":"2026-06-16T23:45:42.43Z","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":"2026-11-02T14:02:16.536025Z"}]}}