Microsoft Windows Out-of-Bounds Write Vulnerability
Description
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.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
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Details
- Vendor
- Microsoft
- Product
- Windows
- CVE
- CVE-2013-3918
- Affected versions
- Windows XP: SP2, SP3
Windows Vista: SP2
Windows 7: SP1
Windows 8: all versions
Windows 8.1: all versions
Windows RT: Gold
Windows RT 8.1: all versions
Windows Server 2003: SP2
Windows Server 2008: SP2
Windows Server: SP1
Windows Server 2012: Gold
Windows Server: all versions (from the advisory and NVD; check the exact builds in the official advisory) - CVSS score
- 8.8
- Actively exploited
- Yes, listed in the CISA Known Exploited Vulnerabilities catalog
- CISA due date
- October 27, 2025 (deadline for US federal agencies: a good benchmark for you too)
- Source
- CISA KEV – original advisory
- Published
- October 6, 2025
The description and the recommended action are quoted from the public advisory; severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.