CVE-2011-3402
Microsoft Windows Remote Code Execution Vulnerability
CVSS
—
No CVSS
EPSS
78.3%
p100
KEV
YES
Oct 6, 2025
Exploit Today
80
0-100
Published: — · Last modified: —
Product
Microsoft / Windows
Vulnerability
Microsoft Windows Remote Code Execution Vulnerability
Added to KEV
Oct 6, 2025
Remediate by
Oct 27, 2025
Known ransomware use
No
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