VULNERABILITY INTELLIGENCE

CVE-2012-4776

CVSS score9.3 HIGH
EPSS probability24.75%
CISA KEVNot currently listed
Published2012-11-14
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:C/I:C/A:C

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."

Weakness classification

  • CWE-20: Improper Input Validation

Primary references