CVE-2011-3402: Technical Deep-Dive (Auto Refreshed)

Generated on 2026-03-23T21:51:43.610Z. This file is automatically regenerated every 30 minutes by the CVE AI enrichment job using web sources (NVD, MITRE, CISA KEV, GitHub).

Executive Technical Summary

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."

• Context preserved from previous revision: 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." Notes: Analysis on vulnerability database osv.dev focused on commit-related data

Technical Details

• CVE: CVE-2011-3402
• KEV date added: 2025-10-06
• KEV due date: 2025-10-27
• NVD published: 2011-11-04
• NVD modified: 2025-10-22
• MITRE modified: 2025-10-22
• CVSS base score: 8.8
• CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
• CVSS exploitability score: 2.8
• CVSS impact score: 5.9
• Attack vector: Network
• Attack complexity: Low
• Privileges required: None
• User interaction: Required
• Scope: Unchanged
• Confidentiality impact: High
• Integrity impact: High
• Availability impact: High

Versions and Products Impacted

• microsoft / windows 7
• microsoft / windows server 2003
• microsoft / windows server 2008
• microsoft / windows vista
• microsoft / windows xp
• n/a / n/a (versions: n/a)

Weakness Classification

• NVD-CWE-noinfo
• CWE-noinfo Not enough information

Repositories for Lab Validation (Public Examples)

• LoricAndre/OSV_Commits_Analysis | stars: 2 | updated: 2024-06-10 | https://github.com/LoricAndre/OSV_Commits_Analysis
  Notes: Analysis on vulnerability database osv.dev focused on commit-related data

People and Organizations Mentioned

• microsoft
• Windows
• LoricAndre

Practical Defensive Validation (Authorized Only)

1. Use only isolated environments and systems you own or are explicitly authorized to test.
2. Snapshot infrastructure before validation and preserve baseline logs (EDR, SIEM, OS, app).
3. Inventory microsoft / windows 7 assets and confirm exact vulnerable versions with automated checks.
4. Patch in staged environments and validate closure with scanners + service health checks.
5. Map detections to MITRE ATT&CK tactics relevant to your environment and tune alert quality.

References

• NVD record: https://nvd.nist.gov/vuln/detail/CVE-2011-3402
• MITRE CVE record: https://www.cve.org/CVERecord?id=CVE-2011-3402
• CISA KEV Catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• CISA KEV JSON feed: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json
• KEV notes: https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087 ; https://nvd.nist.gov/vuln/detail/CVE-2011-3402
• 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
• http://secunia.com/advisories/49121
• http://secunia.com/advisories/49122
• http://technet.microsoft.com/security/advisory/2639658
• http://www.securelist.com/en/blog/208193197/The_Mystery_of_Duqu_Part_Two
• http://www.securitytracker.com/id?1027039
• http://www.symantec.com/connect/w32-duqu_status-updates_installer-zero-day-exploit
• http://www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/w32_duqu_the_precursor_to_the_next_stuxnet.pdf
• http://www.us-cert.gov/cas/techalerts/TA11-347A.html
• http://www.us-cert.gov/cas/techalerts/TA12-129A.html
• http://www.us-cert.gov/cas/techalerts/TA12-164A.html
• http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-291-01E.pdf
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087
• Repository example: https://github.com/LoricAndre/OSV_Commits_Analysis

This content is for defensive security training and authorized validation only.