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CVE-2018-8653: Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 29.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-12-20 · updated 2026-06-17
• Weakness: CWE-787

Description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine Memory Corruption Vulnerability." This affects Internet Explorer 9, Internet Explorer 11, Internet Explorer 10. This CVE ID is unique from CVE-2018-8643.

Affected products

• Microsoft Internet Explorer 11: 9, 10, 11
• Microsoft Internet Explorer 11: Windows 10 for 32-bit Systems, Windows 10 for x64-based Systems, Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows 10 Version 1703 for 32-bit Systems, Windows 10 Version 1703 for x64-based Systems (+18)
• 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

• http://www.securityfocus.com/bid/106255
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8653
• http://www.securityfocus.com/bid/106255
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8653
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8653

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