What’s Vulnerable › Vulnerabilities

CVE-2019-0666

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 20.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-04-08 · updated 2026-06-17
• Weakness: CWE-787

Description

A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory, aka 'Windows VBScript Engine Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2019-0665, CVE-2019-0667, CVE-2019-0772.

Affected products

• Microsoft Internet Explorer 11: 9, 10, 11
• Microsoft Internet Explorer 11: Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows 8.1 for 32-bit systems, Windows 8.1 for x64-based systems, Windows Server 2012 R2 (+2)
• Microsoft Internet Explorer 10: Windows Server 2012
• Microsoft Internet Explorer 9: Windows Server 2008 for 32-bit Systems Service Pack 2, Windows Server 2008 for x64-based Systems Service Pack 2

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0666
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0666

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