CVE-2011-1870: Microsoft Windows 2003 Server

High severity, CVSS 7.2. EPSS: 2.2% chance of exploitation in the next 30 days.

Integer overflow in the Client/Server Run-time Subsystem (aka CSRSS) in the Win32 subsystem in Microsoft Windows XP SP2 and SP3, and Windows Server 2003 SP2, allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that triggers an incorrect memory assignment for a user transaction, aka "CSRSS Local EOP SrvWriteConsoleOutputString Vulnerability."

Affected products

• Microsoft Windows 2003 Server: any version
• Microsoft Windows Server 2003: any version
• Microsoft Windows XP: any version; affected versions not specified

Published 2011-07-13. Last modified 2026-06-16.