CVE Watch—

CVE-2011-3402

Microsoft Windows Remote Code Execution Vulnerability

CVSS

—

No CVSS

EPSS

78.3%

p100

KEV

YES

Oct 6, 2025

Exploit Today

0-100

Published: — · Last modified: —

EPSS · 30d

78.3%EPSS · 30 days78.3%

2026-06-302026-07-16

KEV catalog record

Product

Microsoft / Windows

Vulnerability

Microsoft Windows Remote Code Execution Vulnerability

Added to KEV

Oct 6, 2025

Remediate by

Oct 27, 2025

Known ransomware use

Summary 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

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