Microsoft Silverlight Double Dereference Vulnerability

Microsoft Silverlight does not properly validate pointers during HTML object rendering, which allows remote attackers to execute code via a crafted Silverlight application.

Published 27 Sep 2026Updated 27 Sep 2026545 sources
CVSS 9.3 ✓ VERIFIED REFERENCE△ CISA KEV

What happened

Microsoft Silverlight does not properly validate pointers during HTML object rendering, which allows remote attackers to execute code via a crafted Silverlight application.

Affected versions

Silverlight: See original advisory Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references