CVE-2011-3402
Actively exploited. CVE-2011-3402 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-10-06) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2011-3402 is indexed in Metasploit. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
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.
CSIRTS triage
- What
- The vulnerability allows remote attackers to execute arbitrary code via crafted font data.
- Who is affected
- Deployments of Microsoft Windows with the affected kernel-mode drivers.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Apply the latest security updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2011-3402
Get an email if CVE-2011-3402 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 100% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2011-3402 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- MetasploitA Metasploit Framework module targets this CVE — weaponized, point-and-click exploitation.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2011-3402: Microsoft Windows Remote Code Execution Vulnerabilitycisa-kev · 2025-10-06
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2011-3402)