CVE-2019-1429highunder attackCWE-416

CVE-2019-1429: high-severity vulnerability in Microsoft Internet Explorer 10

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93Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 7.5epss 77%
from disclosure to weapon10 days
Published on NVDNov 12
1st PoC+10d
CISA KEV+722d
Action required by CISAfederal deadline: 2022-05-03

Apply updates per vendor instructions.

In short

Internet Explorer's scripting engine can crash or run attacker's code when processing specially crafted web pages due to improper memory handling. This allows remote attackers to execute malicious code on your computer without additional user interaction beyond visiting the compromised page.

Technical detail

A use-after-free vulnerability (CWE-416) in Internet Explorer's JavaScript engine permits remote code execution when a crafted HTML/JavaScript payload is processed. The attack vector is network-based (visiting a malicious webpage), requiring no authentication or user privilege escalation; successful exploitation grants arbitrary code execution in the browser's security context.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

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:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Microsoft · Internet Explorer 10Microsoft · Internet Explorer 11Microsoft · Internet Explorer 11 on Windows 10 Version 1903 for 32-bit SystemsMicrosoft · Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based SystemsMicrosoft · Internet Explorer 11 on Windows 10 Version 1903 for x64-based SystemsMicrosoft · Internet Explorer 11 on Windows Server 2012Microsoft · Internet Explorer 9
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Microsoft Internet Explorer 10

In the same product, most dangerous first.

CVE-2020-0674HIGHCVE-2020-0674EPSS 86.9%KEVCVE-2019-0752HIGHCVE-2019-0752EPSS 81.7%KEVCVE-2021-26411HIGHInternet Explorer Memory Corruption VulnerabilityEPSS 81.7%KEVCVE-2018-8373HIGHCVE-2018-8373EPSS 61.8%KEVCVE-2019-0541HIGHCVE-2019-0541EPSS 53.2%KEVCVE-2019-1367HIGHCVE-2019-1367EPSS 52.4%KEV