Unrated severityNVD Advisory· Published Nov 14, 2012· Updated Jun 16, 2026
CVE-2012-4776
CVE-2012-4776
Description
The Web Proxy Auto-Discovery (WPAD) functionality in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not validate configuration data that is returned during acquisition of proxy settings, which allows remote attackers to execute arbitrary JavaScript code by providing crafted data during execution of (1) an XAML browser application (aka XBAP) or (2) a .NET Framework application, aka "Web Proxy Auto-Discovery Vulnerability."
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*+ 5 more
- cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net_framework:4.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net_framework:4.5:*:*:*:*:*:*:*
- (no CPE)range: 2.0 SP2, 3.5, 3.5.1, 4, 4.5
Patches
Vulnerability mechanics
References
7- www.us-cert.gov/cas/techalerts/TA12-318A.htmlnvdUS Government Resource
- osvdb.org/87266nvd
- secunia.com/advisories/51236nvd
- www.securityfocus.com/bid/56463nvd
- 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%3A15810nvd
News mentions
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