CVE-2011-3402
What it is
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."
At a glance
- Exploitability
- Can be exploited over the network without logging in, but needs a user to act. High risk of data exposure, data tampering, service disruption.
- In the wild
- CISA lists this as exploited in real attacks. Treat as urgent.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Fix referencedNVD first recorded a patch, advisory or mitigation link
- 2025-10-06 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
- 2025-10-27 Remediation deadlineCISA's due date for federal agencies to fix it
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
- Exploit odds: 78.1% in the next 30 days (EPSS).
- Severity: 8.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Added to CISA KEV
- 2025-10-06
- Exploit probability
- 78.1% · EPSS, next 30 days
- Record status
- Analyzed
Affected
- Microsoft Windows 7
- Microsoft Windows Server 2003
- Microsoft Windows Server 2008
- Microsoft Windows Vista
- Microsoft Windows Xp
Attack profile CVSS 3.1 · 8.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2011-3402.md and follow it. Check whether this project is affected by CVE-2011-3402. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://blogs.technet.com/b/msrc/archive/2011/11/03/microsoft-releases-security-advisory-2639658.aspx
- http://secunia.com/advisories/49121
- http://secunia.com/advisories/49122
- http://technet.microsoft.com/security/advisory/2639658
- 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
- http://blogs.technet.com/b/msrc/archive/2011/11/03/microsoft-releases-security-advisory-2639658.aspx
- http://secunia.com/advisories/49121
- http://secunia.com/advisories/49122
References
- 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
- 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
- http://secunia.com/advisories/49122