CVE-2013-3918

Name: CVE-2013-3918
Creator: NVD / NIST
Published: 2013-11-12T14:35:11.713+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 73.87%

Last modified Jun 16, 2026

CVE-2013-3918 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.". CISA has confirmed active exploitation in the wild. EPSS estimates a 73.87% chance of exploitation in the next 30 days.

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."

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

73.87%

99.4th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Oct 27, 2025.

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Microsoft	Windows 7	All versions	Sp1
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	Sp2
Microsoft	Windows Server 2008	r2	Sp1
Microsoft	Windows Server 2008	sp2	—
Microsoft	Windows Server 2012	All versions	—
Microsoft	Windows Server 2012	r2	—
Microsoft	Windows Vista	All versions	Sp2
Microsoft	Windows Xp	All versions	Sp2

References

http://blogs.technet.com/b/msrc/archive/2013/11/11/activex-control-issue-being-addressed-in-update-tuesday.aspxThird Party Advisory
http://www.darkreading.com/vulnerability/new-ie-vulnerability-found-in-the-wild-s/240163814/Broken Link
http://www.fireeye.com/blog/technical/2013/11/new-ie-zero-day-found-in-watering-hole-attack.htmlThird Party Advisory
http://www.us-cert.gov/ncas/alerts/TA13-317AThird Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-090Patch, Vendor Advisory
https://isc.sans.edu/forums/diary/16985Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19089Broken Link, Third Party Advisory
http://blogs.technet.com/b/msrc/archive/2013/11/11/activex-control-issue-being-addressed-in-update-tuesday.aspxThird Party Advisory
http://www.darkreading.com/vulnerability/new-ie-vulnerability-found-in-the-wild-s/240163814/Broken Link
http://www.fireeye.com/blog/technical/2013/11/new-ie-zero-day-found-in-watering-hole-attack.htmlThird Party Advisory
http://www.us-cert.gov/ncas/alerts/TA13-317AThird Party Advisory, US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-090Patch, Vendor Advisory
https://isc.sans.edu/forums/diary/16985Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19089Broken Link, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3918US Government Resource
https://www.microsoft.com/en-us/msrc/blog/2013/11/technical-details-of-the-targeted-attack-using-ie-vulnerability-cve-2013-3918/Vendor Advisory

Timeline

Published: Nov 12, 2013
Last Modified: Jun 16, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2013-3918?

How severe is CVE-2013-3918?

CVE-2013-3918 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 73.87% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2013-3918?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-3918?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST