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CVE-2011-3402

Unspecified vulnerability in the TrueType font parsing engine in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and…

High8.8Known exploitedEPSS 78.1%
Published
Updated
Reserved
Assigned by
microsoft

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."

Exploited in the wild

CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft Windows Remote Code Execution Vulnerability.

Added
6 Oct 2025
Fix due (US federal)
27 Oct 2025
Used by ransomware
Not known

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

Scores

CVSS scores of CVE-2011-3402, by who scored it
Scored byCVSSScoreVector
CISA-ADPADP (enrichment)3.1High8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVDNVD · Analyzed3.1High8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
78.1% · top 0.4% of all CVEs (2 Nov 2026)
CISA SSVC
Exploitation: active · Automatable: no · Technical impact: total

Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.

Weakness

  • n/a
  • CWE-noinfo Not enough information

Affected products

  • n/a

    • affected n/a

References (21)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .