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…
- 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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By microsoft
- 56 days later
· 56 days later
Published
- 14 years later
· 14 years later
Added to CISA KEV
Known exploited in the wild
- 16 days later
· 16 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High8.8 | CVSS: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 (8 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
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)
- 49121 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- oval:org.mitre.oval:def:15645 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- TA12-164A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- http://blogs.mcafee.com/mcafee-labs/the-day-of-the-golden-jackal-%E2%80%93-further-tales-of-the-stuxnet-files (opens in a new tab)x_refsource_MISCx_transferred
- 1027039 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 49122 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- MS11-087 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- http://www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/w32_duqu_the_precursor_to_the_next_stuxnet.pdf (opens in a new tab)x_refsource_MISCx_transferred
- TA11-347A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- oval:org.mitre.oval:def:13998 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- http://www.us-cert.gov/control_systems/pdf/ICS-ALERT-11-291-01E.pdf (opens in a new tab)x_refsource_MISCx_transferred
- http://www.securelist.com/en/blog/208193197/The_Mystery_of_Duqu_Part_Two (opens in a new tab)x_refsource_MISCx_transferred
- http://technet.microsoft.com/security/advisory/2639658 (opens in a new tab)x_refsource_CONFIRMx_transferred
- MS12-034 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- MS12-039 (opens in a new tab)vendor-advisoryx_refsource_MSx_transferred
- oval:org.mitre.oval:def:15290 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- http://isc.sans.edu/diary/Duqu+Mitigation/11950 (opens in a new tab)x_refsource_MISCx_transferred
- http://www.symantec.com/connect/w32-duqu_status-updates_installer-zero-day-exploit (opens in a new tab)x_refsource_MISCx_transferred
- TA12-129A (opens in a new tab)third-party-advisoryx_refsource_CERTx_transferred
- http://blogs.technet.com/b/msrc/archive/2011/11/03/microsoft-releases-security-advisory-2639658.aspx (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-3402 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2011-3402)Record last updated .