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Known Exploited Vulnerability
9.3
HIGH CVSS 2.0
CVE-2011-3402
Microsoft Windows Remote Code Execution Vulnerability - [Actively Exploited]
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."

INFO

Published Date :

Nov. 4, 2011, 9:55 p.m.

Last Modified :

Oct. 7, 2025, 1 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Microsoft Windows Kernel contains an unspecified vulnerability in the TrueType font parsing engine in win32k.sys in the kernel-mode drivers that allows remote attackers to execute arbitrary code via crafted font data in a Word document or web page.

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.

Notes :

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087 ; https://nvd.nist.gov/vuln/detail/CVE-2011-3402

Affected Products

The following products are affected by CVE-2011-3402 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows_7
2 Microsoft windows_server_2008
3 Microsoft windows_server_2003
4 Microsoft windows_vista
5 Microsoft windows_xp
: Total Affected Vendor : 1 | Products : 5
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 HIGH [email protected]
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
The Microsoft Windows TrueType font parsing engine has an input validation vulnerability that could allow for arbitrary code execution.
  • Apply the relevant Microsoft security updates to address this vulnerability for Windows, Microsoft Office, .NET Framework, Silverlight, and Lync.
  • Reboot the system if prompted.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2011-3402.

URL Resource
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 Vendor Advisory
http://secunia.com/advisories/49122 Vendor Advisory
http://technet.microsoft.com/security/advisory/2639658 Vendor Advisory
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 US Government Resource
http://www.us-cert.gov/cas/techalerts/TA12-129A.html US Government Resource
http://www.us-cert.gov/cas/techalerts/TA12-164A.html US Government Resource
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-291-01E.pdf US Government Resource
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
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
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15645
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 Vendor Advisory
http://secunia.com/advisories/49122 Vendor Advisory
http://technet.microsoft.com/security/advisory/2639658 Vendor Advisory
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 US Government Resource
http://www.us-cert.gov/cas/techalerts/TA12-129A.html US Government Resource
http://www.us-cert.gov/cas/techalerts/TA12-164A.html US Government Resource
http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-291-01E.pdf US Government Resource
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
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
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15645
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2011-3402 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2011-3402 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2011-3402 vulnerability anywhere in the article.

  • TheCyberThrone
CISA Adds 7 Actively Exploited Vulnerabilities to KEV Catalog

October 7, 2025The Cybersecurity and Infrastructure Security Agency (CISA) has expanded its Known Exploited Vulnerabilities (KEV) catalog in October 2025, adding several high-impact vulnerabilities be ... Read more

Published Date: Oct 07, 2025 (1 hour, 28 minutes ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2011-3402 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Oct. 07, 2025

    Action Type Old Value New Value
    Added Date Added 2025-10-06
    Added Due Date 2025-10-27
    Added 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.
    Added Vulnerability Name Microsoft Windows Remote Code Execution Vulnerability
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 06, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://blogs.mcafee.com/mcafee-labs/the-day-of-the-golden-jackal-%E2%80%93-further-tales-of-the-stuxnet-files
    Added Reference http://blogs.technet.com/b/msrc/archive/2011/11/03/microsoft-releases-security-advisory-2639658.aspx
    Added Reference http://isc.sans.edu/diary/Duqu+Mitigation/11950
    Added Reference http://secunia.com/advisories/49121
    Added Reference http://secunia.com/advisories/49122
    Added Reference http://technet.microsoft.com/security/advisory/2639658
    Added Reference http://www.securelist.com/en/blog/208193197/The_Mystery_of_Duqu_Part_Two
    Added Reference http://www.securitytracker.com/id?1027039
    Added Reference http://www.symantec.com/connect/w32-duqu_status-updates_installer-zero-day-exploit
    Added Reference http://www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/w32_duqu_the_precursor_to_the_next_stuxnet.pdf
    Added Reference http://www.us-cert.gov/cas/techalerts/TA11-347A.html
    Added Reference http://www.us-cert.gov/cas/techalerts/TA12-129A.html
    Added Reference http://www.us-cert.gov/cas/techalerts/TA12-164A.html
    Added Reference http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-291-01E.pdf
    Added Reference https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087
    Added Reference https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-034
    Added Reference https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13998
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15290
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15645
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    Sep. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:x64:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Sep. 28, 2020

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:itanium:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Feb. 26, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2003:*:sp2:x64:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Feb. 26, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2003:*:sp2:itanium:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 30, 2018

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:microsoft:windows_7:-:sp1:x32:*:*:*:*:* OR *cpe:2.3:o:microsoft:windows_7:-:sp1:x86:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 12, 2018

    Action Type Old Value New Value
    Removed Reference http://technet.microsoft.com/security/bulletin/MS12-039 [No Types Assigned]
    Removed Reference http://technet.microsoft.com/security/bulletin/MS11-087 [No Types Assigned]
    Removed Reference http://technet.microsoft.com/security/bulletin/MS12-034 [Patch, Vendor Advisory]
    Added Reference https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039 [No Types Assigned]
    Added Reference https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-034 [No Types Assigned]
    Added Reference https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087 [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 19, 2017

    Action Type Old Value New Value
    Removed Reference http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:13998 [No Types Assigned]
    Removed Reference http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:15645 [No Types Assigned]
    Removed Reference http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:15290 [No Types Assigned]
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15645 [No Types Assigned]
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15290 [No Types Assigned]
    Added Reference https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13998 [No Types Assigned]
  • Initial Analysis by [email protected]

    Nov. 07, 2011

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 9.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

92.06 }} 0.04%

score

0.99704

percentile