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CVE-2013-3918

Out-of-bounds Write — is CVE-2013-3918real, exploitable, or a false positive? Here's the community ground truth.

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High · CVSS 8.8EPSS 73.9%CISA KEVCWE-787 · Out-of-bounds Write

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

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."

References

NVD MITRE CVE.org CISA KEV

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Community ground truth

Community verdict

2 verdicts
Not a real issue

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Community real-world severity: High (High 2) — CVSS base score 8.8

In line with its CVSS base score.

Field notes & remediation

Verdicts are the quick signal — notes are the evidence and fixes behind them.

  • 0
    Field note · Yuki TanakaCurated

    Microsoft Windows Out-of-Bounds Write Vulnerability — 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. Listed in the CISA KEV catalog (added 2025-10-06) — confirmed exploited in the wild, not theoretical. FIRST EPSS puts the chance of exploitation in the next 30 days at ~74%. Treat it as real and prioritize remediation over triage.

  • 0
    Remediation · Hanna BergCurated

    Required action for Microsoft Windows: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA set a federal remediation due date of 2025-10-27. After patching, verify the vulnerable path is no longer reachable before closing the finding.

Related CVEs

Same weakness — CWE-787 · Out-of-bounds Write.