CVE-2013-3918

HIGH8.8

CISA KEV

Published 2013-11-12 · Updated 2026-06-16 · Source secure@microsoft.com

Summary

CVE-2013-3918 is a high-severity (CVSS 8.8) vulnerability in Microsoft Windows. CISA added it to the Known Exploited Vulnerabilities catalog on October 6, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by October 27, 2025. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

All 390 known-exploited Microsoft vulnerabilities →

Description

The InformationCardSigninHelper Class ActiveX control in icardie.dll in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds write) via a crafted web page that is accessed by Internet Explorer, as exploited in the wild in November 2013, aka "InformationCardSigninHelper Vulnerability."

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-787CWE-787

CISA Known-Exploited Vulnerability

Product: Microsoft — Windows

Name: Microsoft Windows Out-of-Bounds Write Vulnerability

Date added: 2025-10-06 · Due: 2025-10-27

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

View on NVD

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