What’s Vulnerable › Vulnerabilities

CVE-2011-1266

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 18.0% 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-908

Description

The Vector Markup Language (VML) implementation in vgx.dll in Microsoft Internet Explorer 6 through 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly initialized or (2) is deleted, aka "VML Memory Corruption Vulnerability."

Affected products

• Microsoft Internet Explorer 11: 6, 7, 8

References

• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-052
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12593
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-052
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12593

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