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CVE-2018-8389

HighPublished

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka "Scripting Engine...

Published: Aug 15, 2018
Updated: Aug 5, 2024
Assigning CNA: microsoft
Evidence observed: Aug 4, 2026

Primary CVSS

7.6/ 10High

nvd · CVSS 2.0

AV:N/AC:H/Au:N/C:C/I:C/A:C

EPSS probability estimate

28.1%

Moderate · next 30 days

Percentile: 98.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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-2018-8353, CVE-2018-8355, CVE-2018-8359, CVE-2018-8371, CVE-2018-8372, CVE-2018-8373, CVE-2018-8385, CVE-2018-8390.

Sources

cve-2018-8389PoC
Technical analysis and proof-of-concept for CVE-2018-8389, a use-after-free vulnerability in Internet Explorer's jscript.dll allowing remote code execution via crafted ActiveXObject calls.

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