CISA Known Exploited Vulnerability
This vulnerability is actively exploited in the wild and listed in the CISA Known Exploited Vulnerabilities catalog.
Remediation Deadline: Oct 27, 2025
High
CISA KEVCVE-2011-3402
Microsoft—Windows
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
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087 ; https://nvd.nist.gov/vuln/detail/CVE-2011-3402
Vulnerability Overview
- Severity
- High
- CISA KEV
- Yes
- Ransomware
- Unknown
- Published
- Oct 6, 2025
- KEV Added
- Oct 6, 2025
- Due Date
- Oct 27, 2025
- Related Articles
- 0
Vendor
Microsoft
Windows