CVE-2012-4776

Critical

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."

SeverityCritical

CVSS9.3

Exploit probability—

Product

Microsoft .net Framework

PublishedNov 14, 2012

First seenNov 14, 2012

How to fix

Vendor advisories

docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-074

Affected products

Product	Affected versions	Fixed in
microsoft .net_framework	2.0, 3.5.1, 4.0, 3.5, 4.5	—

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