What’s Vulnerable › Vulnerabilities

CVE-2011-2003

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 26.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2011-10-12 · updated 2026-06-16
• Weakness: CWE-119

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."

Affected products

• Microsoft Windows 2003 Server: all versions
• Microsoft Windows 7: all versions
• Microsoft Windows Server 2003: all versions
• Microsoft Windows Server 2008: r2
• Microsoft Windows Vista: all versions
• Microsoft Windows XP Service Pack 3: all versions

References

• http://securityreason.com/securityalert/8473
• http://www.securitytracker.com/id?1026165
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13103
• http://securityreason.com/securityalert/8473
• http://www.securitytracker.com/id?1026165
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-077
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13103

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