SARA / Free Tools / KEV / CVE-2013-3900

CVE-2013-3900 on CISA KEV

Why is Microsoft republishing a CVE from 2013? We are republishing CVE-2013-3900 in the Security Update Guide to update the Security Updates table and to inform customers that the EnableCertPaddingCheck is available in all currently supported versions of Windows 10 and Windows 11

CISA KEV — Actively Exploited

Microsoft WinVerifyTrust function Remote Code Execution

Vendor / Product
— / Microsoft / WinVerifyTrust function
Added to KEV
2022-01-10
BOD 22-01 due
2022-07-10
Ransomware use
Unknown
CVSS / EPSS
5.5 MEDIUM · EPSS 80.23%

01What CISA says about this vulnerability

Why is Microsoft republishing a CVE from 2013? We are republishing CVE-2013-3900 in the Security Update Guide to update the Security Updates table and to inform customers that the EnableCertPaddingCheck is available in all currently supported versions of Windows 10 and Windows 11. While the format is different from the original CVE published in 2013, except for clarifications about how to…

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
MicrosoftWindows 10 Version 1809N/A
MicrosoftWindows 10 Version 1809N/A
MicrosoftWindows Server 2019N/A
MicrosoftWindows Server 2019 (Server Core installation)N/A
MicrosoftWindows Server 2022N/A
MicrosoftWindows 11 version 21H2N/A
MicrosoftWindows 10 Version 21H2N/A
MicrosoftWindows 11 version 22H2N/A
MicrosoftWindows 10 Version 22H2N/A
MicrosoftWindows Server 2025 (Server Core installation)N/A
MicrosoftWindows 11 version 22H3N/A
MicrosoftWindows 11 Version 23H2N/A
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)N/A
MicrosoftWindows 11 Version 24H2N/A
MicrosoftWindows Server 2025N/A
MicrosoftWindows 10 Version 1507N/A
MicrosoftWindows 10 Version 1607N/A
MicrosoftWindows Server 2016N/A
MicrosoftWindows Server 2016 (Server Core installation)N/A
MicrosoftWindows Server 2008 Service Pack 2N/A
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)N/A
MicrosoftWindows Server 2008 Service Pack 2N/A
MicrosoftWindows Server 2008 R2 Service Pack 1N/A
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)N/A
MicrosoftWindows Server 2012N/A
MicrosoftWindows Server 2012 (Server Core installation)N/A
MicrosoftWindows Server 2012 R2N/A
MicrosoftWindows Server 2012 R2 (Server Core installation)N/A

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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