CVE-2013-3918

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."

Score: CVSS 3.1 8.8 High
Status: Analyzed - secure@microsoft.com
Published: 2013-11-12
Last modified: 2025-10-22
Known exploited (CISA KEV): since 2025-10-06, action due 2025-10-27: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weaknesses: CWE-787

Affected products

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
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3918
https://www.microsoft.com/en-us/msrc/blog/2013/11/technical-details-of-the-targeted-attack-using-ie-vulnerability-cve-2…