Buffer overflow in Microsoft Windows_7
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…
Vulnerability class: Buffer Overflow
EPSS: 0.739 (99.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- secure@microsoft.com (US Government Resource, Third Party Advisory, x_refsource_CERT, third-party-advisory)
- secure@microsoft.com (x_refsource_MISC, Broken Link)
- secure@microsoft.com (x_refsource_MS, vendor-advisory, Patch, Vendor Advisory)
- secure@microsoft.com (Third Party Advisory, x_refsource_MISC)
- secure@microsoft.com (Broken Link, signature, x_refsource_OVAL, Third Party Advisory, vdb-entry)
- secure@microsoft.com (Third Party Advisory, x_refsource_MISC)
- secure@microsoft.com (x_refsource_CONFIRM, Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Vendor Advisory)
Frequently asked questions
- What is CVE-2013-3918?
- CVE-2013-3918 is a high-severity vulnerability in Microsoft Windows_7, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2013-11-12.
- How severe is CVE-2013-3918?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2013-3918 known to be exploited?
- Yes. CVE-2013-3918 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-06), indicating it is being actively exploited. 7 public proof-of-concept repositories are indexed.