Unrated severityNVD Advisory· Published Nov 14, 2012· Updated Jun 16, 2026
CVE-2012-4777
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."
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:microsoft:.net_framework:4.0:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:microsoft:.net_framework:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net_framework:4.5:*:*:*:*:*:*:*
- (no CPE)range: 4, 4.5
Patches
Vulnerability mechanics
References
7- www.us-cert.gov/cas/techalerts/TA12-318A.htmlnvdUS Government Resource
- osvdb.org/87267nvd
- secunia.com/advisories/51236nvd
- www.securityfocus.com/bid/56464nvd
- www.securitytracker.com/idnvd
- docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-074nvd
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15960nvd
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