What’s Vulnerable › Vulnerabilities

CVE-2011-1873

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 18.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-06-16 · updated 2026-06-16
• Weakness: CWE-20

Description

win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 on 64-bit platforms does not properly validate pointers during the parsing of OpenType (aka OTF) fonts, which allows remote attackers to execute arbitrary code via a crafted font file, aka "Win32k OTF Validation Vulnerability."

Affected products

• 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://secunia.com/advisories/44893
• http://www.securityfocus.com/bid/48183
• http://www.securitytracker.com/id?1025638
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-041
• https://exchange.xforce.ibmcloud.com/vulnerabilities/67732
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12725
• http://secunia.com/advisories/44893
• http://www.securityfocus.com/bid/48183
• http://www.securitytracker.com/id?1025638
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-041
• https://exchange.xforce.ibmcloud.com/vulnerabilities/67732
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12725

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