CVE-2013-3178: Microsoft Silverlight

High severity, CVSS 9.3. EPSS: 32.1% chance of exploitation in the next 30 days.

Microsoft Silverlight 5 before 5.1.20513.0 does not properly initialize arrays, which allows remote attackers to execute arbitrary code or cause a denial of service (NULL pointer dereference) via a crafted Silverlight application, aka "Null Pointer Vulnerability."

Affected products

• Microsoft Silverlight: version 5.0.60401.0 only; version 5.0.60818.0 only; version 5.0.61118.0 only; version 5.1.10411.0 only; version 5.1.20125.0 only

Published 2013-07-10. Last modified 2026-06-16.