CVE-2016-0034: Microsoft Silverlight Runtime Remote Code Execution Vulnerability

High severity, CVSS 8.8. Actively exploited: in CISA KEV since 2022-05-25. EPSS: 69.4% chance of exploitation in the next 30 days.

Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability."

Affected products

• Microsoft Silverlight: from 5.0, before 5.1.41212.0 (fixed in 5.1.41212.0)

Published 2016-01-13. Last modified 2026-08-14.