CVE-2015-6111: Microsoft Windows 10

Medium severity, CVSS 6.8. EPSS: 7.8% chance of exploitation in the next 30 days.

IPSec in Microsoft Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT Gold and 8.1, and Windows 10 Gold and 1511 mishandles encryption negotiation, which allows remote authenticated users to cause a denial of service (system hang) via crafted IP traffic, aka "Windows IPSec Denial of Service Vulnerability."

Affected products

• Microsoft Windows 10: affected versions not specified
• Microsoft Windows 8: affected versions not specified
• Microsoft Windows 8.1: affected versions not specified
• Microsoft Windows Rt: affected versions not specified
• Microsoft Windows Rt 8.1: affected versions not specified
• Microsoft Windows Server 2012: affected versions not specified; version r2 only

Published 2015-11-11. Last modified 2026-06-17.