Remote code execution in Microsoft Windows

Published: 2013-11-12 | Updated: 2017-01-13
Severity Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2013-3918
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software Windows Subscribe
Windows Server
InformationCardSigninHelper Class ActiveX control
Vendor Microsoft

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Memory corruption

Severity: Critical

CVSSv3: 8.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]

CVE-ID: CVE-2013-3918

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to out-of-bounds memory access within InformationCardSigninHelper Class ActiveX control (icardie.dll). A remote attacker can create specially crafted Web page that passes an overly long string argument to vulnerable ActiveX component, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.


Install update from vendor's website.

Vulnerable software versions

Windows: 7, 8, RT 8.1, Vista, XP

Windows Server: 2003, 2008, 2012

InformationCardSigninHelper Class ActiveX control: -

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.