What’s Vulnerable › Vulnerabilities

CVE-2013-3918: Microsoft Windows Out-of-Bounds Write Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2025-10-06
• EPSS: 73.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2013-11-12 · updated 2026-06-16
• Weakness: CWE-787

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."

Affected products

• Microsoft Windows 7: all versions
• Microsoft Windows 8: all versions
• Microsoft Windows 8.1: all versions
• Microsoft Windows Rt: all versions
• Microsoft Windows RT 8.1: all versions
• Microsoft Windows Server 2003: all versions
• Microsoft Windows Server 2008: r2-sp1, sp2
• Microsoft Windows Server 2012: r2
• Microsoft Windows Vista: all versions
• Microsoft Windows XP Service Pack 3: all versions

References

• http://blogs.technet.com/b/msrc/archive/2013/11/11/activex-control-issue-being-addressed-in-update-tuesday.aspx
• http://www.darkreading.com/vulnerability/new-ie-vulnerability-found-in-the-wild-s/240163814/
• http://www.fireeye.com/blog/technical/2013/11/new-ie-zero-day-found-in-watering-hole-attack.html
• http://www.us-cert.gov/ncas/alerts/TA13-317A
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-090
• https://isc.sans.edu/forums/diary/16985
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19089
• http://blogs.technet.com/b/msrc/archive/2013/11/11/activex-control-issue-being-addressed-in-update-tuesday.aspx
• http://www.darkreading.com/vulnerability/new-ie-vulnerability-found-in-the-wild-s/240163814/
• http://www.fireeye.com/blog/technical/2013/11/new-ie-zero-day-found-in-watering-hole-attack.html
• http://www.us-cert.gov/ncas/alerts/TA13-317A
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-090

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