CISA-confirmed known exploited vulnerability

CVE-2013-3900

Microsoft WinVerifyTrust function Remote Code Execution

Microsoft · WinVerifyTrust function

Vulnerability details

A remote code execution vulnerability exists in the way that the WinVerifyTrust function handles Windows Authenticode signature verification for PE files.

Added to CISA KEV: 2022-01-10

Ransomware campaign use: Unknown

CISA due date: 2022-07-10

Defensive guidance from CISA

Apply updates per vendor instructions.

This is the source's required-action field, not an independently validated patch procedure. Refer to the vendor for exact affected versions and fixes.

Source catalog date: 2026-11-06T19:44:45.1797Z · Last retrieved: 2026-11-06 21:02:26 UTC

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