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
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.
EPSS — Exploit Probability
90.3%
Higher than 99.6% of all CVEs
Required Action
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-087 ; https://nvd.nist.gov/vuln/detail/CVE-2011-3402
Risk Assessment
HIGHIn CISA KEV
High EPSS
Details
- Severity
- High
- EPSS
- 90.3%
- CISA KEV
- Yes
- Ransomware
- Unknown
- Articles
- 0
Timeline
Published
Oct 6, 2025
Added to KEV
Oct 6, 2025
Remediation Due
Oct 27, 2025