Description
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."
Exploits (1)
exploitdb
WORKING POC
VERIFIED
by Byoungyoung Lee · textdoswindows
https://www.exploit-db.com/exploits/17978
References (4)
Core 4
Core References
Vendor Advisory vendor-advisory
x_refsource_ms
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077
Third Party Advisory, VDB Entry vdb-entry
signature
x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13103
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id?1026165
Third Party Advisory third-party-advisory
x_refsource_sreason
http://securityreason.com/securityalert/8473
Scores
EPSS
0.4940
EPSS Percentile
97.8%
Details
CWE
CWE-119
Status
published
Products (7)
microsoft/windows_2003_server
microsoft/windows_7
(3 CPE variants)
microsoft/windows_server_2003
microsoft/windows_server_2008
(3 CPE variants)
microsoft/windows_server_2008
r2 (2 CPE variants)
microsoft/windows_vista
microsoft/windows_xp
(2 CPE variants)
Published
Oct 12, 2011
Tracked Since
Feb 18, 2026