CVE-2013-3918

Microsoft Windows Out-of-Bounds Write

8.8 HIGHActively exploited (CISA KEV)EPSS 73.7%

Published12 Nov 2013
Added to CISA KEV6 Oct 2025
Remediation due27 Oct 2025

Microsoft Windows contains an out-of-bounds write vulnerability in the InformationCardSigninHelper Class ActiveX control, icardie.dll. An attacker could exploit the vulnerability by constructing a specially crafted webpage. When a user views the webpage, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

Added to KEV: 6 Oct 2025Federal remediation due: 27 Oct 2025

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 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Microsoft Windows 7all versions

Microsoft Windows 8all versions

Microsoft Windows 8.1all versions

Microsoft Windows Rtall versions

Microsoft Windows Rt 8.1all versions

Microsoft Windows Server 2003all versions

Microsoft Windows Server 2008r2 · sp2

Microsoft Windows Server 2012r2

Microsoft Windows Vistaall versions

Microsoft Windows Xpall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

References

http://blogs.technet.com/b/msrc/archive/2013/11/11/activex-control-issue-being-addressed-in-update-tuesday.aspxThird Party Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-090PatchVendor Advisory
https://isc.sans.edu/forums/diary/16985Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19089Third Party AdvisoryBroken Link
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
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 AdvisoryUS Government Resource

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2013-3918 being actively exploited?

Yes. CVE-2013-3918 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 6 Oct 2025.

How severe is CVE-2013-3918?

CVE-2013-3918 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 73.7% probability of exploitation.

Which products are affected by CVE-2013-3918?

Affected products include Microsoft Windows 7, Microsoft Windows 8, Microsoft Windows 8.1, Microsoft Windows Rt, Microsoft Windows Rt 8.1, and 5 more.

How do I fix CVE-2013-3918?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2013-3918 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.