Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability

HIGH 7.5EXPLOITED (CISA KEV)CVE-2019-1429 · Published 12/11/2019 · updated 17/06/2026

Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability. Actively exploited: CISA added this vulnerability to its Known Exploited Vulnerabilities catalog on 03/11/2021. Patch affected systems as an emergency.

Package	Affected versions	Patched versions
internet explorer microsoft	`= 10= 11= 9`	No fix yet

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 CVE ID is unique from CVE-2019-1426, CVE-2019-1427, CVE-2019-1428.

References

packetstormsecurity.com/files/155433/Microsoft-Internet-Explorer-Use-After-Free.html · Exploit
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1429 · Patch
cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
CISA KEV · CVE-2019-1429

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