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CVE-2011-3402

HIGH · CVSS 8.8CISA KEV: actively exploitedEPSS 78.1%EU EUVD: exploited

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."

Key facts

CVSS score
8.8 (v3.1)
Severity
HIGH
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS score
78.1% (100th percentile)
In CISA KEV
Yes, added October 6, 2025
In EU EUVD
Yes (EUVD-2011-3365)
Published
November 4, 2011
NVD last modified
June 16, 2026
Status
Analyzed

CISA Known Exploited Vulnerability

Microsoft Windows Remote Code Execution Vulnerability

Added to the KEV catalog on October 6, 2025; federal remediation due October 27, 2025.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-3365 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 22, 2025.

View on the EU Vulnerability Database

Affected products

  • microsoft / windows 7
  • microsoft / windows 7
  • microsoft / windows server 2003
  • microsoft / windows server 2008
  • microsoft / windows server 2008
  • microsoft / windows server 2008
  • microsoft / windows vista
  • microsoft / windows xp
  • microsoft / windows xp

Certified products that may be affected

13 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

See all 13 in the Security Certifications Explorer.

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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CVE-2011-3402: HIGH severity (CVSS 8.8)