CVE-2013-3918The 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…
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It affects microsoft windows_7 and 9 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Oct 6, 2025; federal agencies had to remediate by Oct 27, 2025. Treat that date as your deadline.
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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."
- CVSS
- 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Added to CISA KEV Oct 6, 2025; federal remediation due Oct 27, 2025Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 73.69% (percentile 99)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 22, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
microsoft windows_7 microsoft:windows_7 | all versions | NVD |
microsoft windows_8 microsoft:windows_8 | all versions | NVD |
microsoft windows_8.1 microsoft:windows_8.1 | all versions | NVD |
microsoft windows_rt microsoft:windows_rt | all versions | NVD |
microsoft windows_rt_8.1 microsoft:windows_rt_8.1 | all versions | NVD |
microsoft windows_server_2003 microsoft:windows_server_2003 | all versions | NVD |
microsoft windows_server_2008 microsoft:windows_server_2008 | r2; r2; sp2 | NVD |
microsoft windows_server_2012 microsoft:windows_server_2012 | all versions; r2 | NVD |
microsoft windows_vista microsoft:windows_vista | all versions | NVD |
microsoft windows_xp microsoft:windows_xp | all versions; all versions | NVD |
References
- http://www.us-cert.gov/ncas/alerts/TA13-317Athird-party-advisory, x-refsource-cert, us-government-resource
- http://www.darkreading.com/vulnerability/new-ie-vulnerability-found-in-the-wild-s/240163814/x-refsource-misc, broken-link
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-090vendor-advisory, x-refsource-ms, patch
- http://www.fireeye.com/blog/technical/2013/11/new-ie-zero-day-found-in-watering-hole-attack.htmlx-refsource-misc, third-party-advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19089vdb-entry, signature, x-refsource-oval, broken-link, third-party-advisory
- https://isc.sans.edu/forums/diary/16985x-refsource-misc, third-party-advisory
- http://blogs.technet.com/b/msrc/archive/2013/11/11/activex-control-issue-being-addressed-in-update-tuesday.aspxx-refsource-confirm, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3918us-government-resource
- https://www.microsoft.com/en-us/msrc/blog/2013/11/technical-details-of-the-targeted-attack-using-ie-vulnerability-cve-2013-3918/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.