InformationCardSigninHelper ActiveX Out-of-Bounds Write RCE
CVE-2013-3918 is an out-of-bounds write vulnerability in the InformationCardSigninHelper Class ActiveX control implemented in icardie.dll on multiple Microsoft Windows versions, including Windows XP SP2/SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8/8.1, Windows Server 2012/2012 R2, and Windows RT/RT 8.1. The flaw can be triggered when a user accesses a crafted web page with Internet Explorer that instantiates the vulnerable ActiveX control. Successful exploitation allows a remote attacker to corrupt memory via an out-of-bounds write, leading to arbitrary code execution in the security context of the current user, or to cause a denial of service. The vulnerability was reported as exploited in the wild in November 2013 and is also referred to as the "InformationCardSigninHelper Vulnerability."
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.