Patch now. It under exploitation confirmed by CISA and has a working public exploit.
ssvc Actcvss 8.8epss 74%
from disclosure to weapon15 days
Published on NVDNov 12
1st PoC+15d
metasploitNov 8
CISA KEV+4346d
exploitation probability
74%top 1% of all CVEs
observed exploitation
yesCISA + VulnCheck
1 public exploit(s)
Action required by CISAfederal deadline: 2025-10-27
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
In short
A flaw in Windows' InformationCardSigninHelper ActiveX control allows attackers to run malicious code on a computer when a user visits a specially crafted webpage in Internet Explorer. This happened in real attacks in November 2013.
Technical detail
Out-of-bounds write vulnerability in the InformationCardSigninHelper ActiveX control (icardie.dll) exploitable via crafted HTML content delivered through Internet Explorer. Requires user to visit malicious page; results in arbitrary code execution with user privileges or denial of service.
Summary generated and translated by AI from the official 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."