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CVE-2011-2003

HighPublished

Buffer overflow in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server...

Published: Oct 12, 2011
Updated: Aug 6, 2024
Assigning CNA: microsoft
Evidence observed: Oct 13, 2011

Primary CVSS

9.3/ 10High

nvd · CVSS 2.0

AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS probability estimate

26.6%

Moderate · next 30 days

Percentile: 98.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Buffer overflow in win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code via a crafted .fon file, aka "Font Library File Buffer Overrun Vulnerability."

Sources

Microsoft Windows - '.fon' Kernel-Mode Buffer Overrun (PoC) (MS11-077)Exploit
Byoungyoung Lee · windows · Oct 13, 2011

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