CVE-2019-1429
Published 2019-11-12 · Updated 2026-06-17 · Source secure@microsoft.com
Summary
CVE-2019-1429 is a high-severity (CVSS 7.5) vulnerability in Microsoft Internet Explorer. CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 3, 2022. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.
All 390 known-exploited Microsoft vulnerabilities →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.
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Microsoft — Internet Explorer
Name: Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability
Date added: 2021-11-03 · Due: 2022-05-03
Required action: Apply updates per vendor instructions.
References
- http://packetstormsecurity.com/files/155433/Microsoft-Internet-Explorer-Use-After-Free.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1429
- http://packetstormsecurity.com/files/155433/Microsoft-Internet-Explorer-Use-After-Free.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1429
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1429