CVE-2011-3402
Microsoft Windows Remote Code Execution
- Published4 Nov 2011
- Added to CISA KEV6 Oct 2025
- Remediation due27 Oct 2025
Description
Unspecified vulnerability in the TrueType font parsing engine in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via crafted font data in a Word document or web page, as exploited in the wild in November 2011 by Duqu, aka "TrueType Font Parsing Vulnerability."
CVSS 3.1 breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HAffected products
Remediation
No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.
- http://blogs.technet.com/b/msrc/archive/2011/11/03/microsoft-releases-security-advisory-2639658.aspx
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-034
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039
- http://secunia.com/advisories/49121
- http://secunia.com/advisories/49122
References
- http://blogs.mcafee.com/mcafee-labs/the-day-of-the-golden-jackal-%E2%80%93-further-tales-of-the-stuxnet-files
- http://blogs.technet.com/b/msrc/archive/2011/11/03/microsoft-releases-security-advisory-2639658.aspx
- http://isc.sans.edu/diary/Duqu+Mitigation/11950
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-034
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039
- http://secunia.com/advisories/49121
- http://secunia.com/advisories/49122
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13998
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15290
and 11 more references
Frequently asked
Is CVE-2011-3402 being actively exploited?
Yes. CVE-2011-3402 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 6 Oct 2025.
How severe is CVE-2011-3402?
CVE-2011-3402 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 78.1% probability of exploitation.
Which products are affected by CVE-2011-3402?
Affected products include Microsoft Windows 7, Microsoft Windows Server 2003, Microsoft Windows Server 2008, Microsoft Windows Vista, Microsoft Windows Xp.
How do I fix CVE-2011-3402?
Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.
How Secuno handles this
Secuno correlates vulnerabilities like CVE-2011-3402 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.
Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.