Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2011-3402

Microsoft Windows Remote Code Execution Vulnerability

HighExploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Windows, fix it now.

CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

US federal civilian agencies must remediate by Oct 27, 2025.

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations and CISA's required action, limit exposure of affected systems, and watch this record for a patch.

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."

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorSource
WindowsMicrosoftKEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2011-3402 scored CVSS 8.8: Microsoft Windows, Microsoft Windows Remote Code Execution Vulnerability

    CISA lists this as exploited in the wild. Unpatched Windows systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

  • docs.microsoft.com https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087
  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2011-3402
  • blogs.mcafee.com http://blogs.mcafee.com/mcafee-labs/the-day-of-the-golden-jackal-%E2%80%93-further-tales-of-the-stuxnet-files
  • blogs.technet.com http://blogs.technet.com/b/msrc/archive/2011/11/03/microsoft-releases-security-advisory-2639658.aspx
  • isc.sans.edu http://isc.sans.edu/diary/Duqu+Mitigation/11950
  • secunia.com http://secunia.com/advisories/49121
  • secunia.com http://secunia.com/advisories/49122
  • technet.microsoft.com http://technet.microsoft.com/security/advisory/2639658
  • securelist.com http://www.securelist.com/en/blog/208193197/The_Mystery_of_Duqu_Part_Two
  • securitytracker.com http://www.securitytracker.com/id?1027039
  • symantec.com http://www.symantec.com/connect/w32-duqu_status-updates_installer-zero-day-exploit
  • symantec.com http://www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/w32_duqu_the_precursor_to…
  • us-cert.gov http://www.us-cert.gov/cas/techalerts/TA11-347A.html
  • us-cert.gov http://www.us-cert.gov/cas/techalerts/TA12-129A.html
  • us-cert.gov http://www.us-cert.gov/cas/techalerts/TA12-164A.html
  • us-cert.gov http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-291-01E.pdf
  • docs.microsoft.com https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-034
  • docs.microsoft.com https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039
  • oval.cisecurity.org https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13998
  • oval.cisecurity.org https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15290
  • oval.cisecurity.org https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15645
  • cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-3402