CVE-2019-0746 — Scripting Engine Information Disclosure Vulnerability

Executive Summary

An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory in Microsoft Edge. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system. In a web-based attack scenario, an attacker could host a website in an attempt to exploit the vulnerability. In addition, compromised websites and websites that accept or host user-provided content could contain specially crafted content that could exploit the vulnerability. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action. For example, an attacker could trick a user into clicking a link that takes the user to the attacker's site. The security update addresses the vulnerability by changing how the scripting engine handles objects in memory.

Overview

7.5

CVSS HIGH

Important

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Information Disclosure

Released Mar 12 2019

Last Updated Mar 12 2019

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.06553 — 0.92942 percentile

CVSS Vector

ATTACK VECTOR

Network

ATTACK COMPLEXITY

High

PRIVILEGES REQUIRED

None

USER INTERACTION

Required

SCOPE

Unchanged

Temporal Score: 6.7

EPSS Score

0.06553

probability of exploitation in the next 30 days

0.92942 percentile - updated 2026-06-20

View on FIRST.org

Affected Products

45 affected products

Product	KB Article	Severity	Impact	Restart Required
ChakraCore	`Release Notes (Security Update)`	Important	Information Disclosure	Maybe
Internet Explorer 10 on Windows Server 2012	`4489891 (Monthly Rollup) 4489873 (IE Cumulative)`	Low	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 for 32-bit Systems	`4489872 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 for x64-based Systems	`4489872 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems	`4489882 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems	`4489882 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems	`4489871 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems	`4489871 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems	`4489886 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems	`4489886 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems	`4489886 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems	`4489868 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems	`4489868 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems	`4489868 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems	`4489899 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems	`4489899 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems	`4489899 (Security Update)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1	`4489873 (IE Cumulative) 4489878 (Monthly Rollup)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1	`4489873 (IE Cumulative) 4489878 (Monthly Rollup)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 8.1 for 32-bit systems	`4489873 (IE Cumulative) 4489881 (Monthly Rollup)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows 8.1 for x64-based systems	`4489873 (IE Cumulative) 4489881 (Monthly Rollup)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows RT 8.1	`4489881 (Monthly Rollup)`	Important	Information Disclosure	Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1	`4489873 (IE Cumulative) 4489878 (Monthly Rollup)`	Low	Information Disclosure	Yes
Internet Explorer 11 on Windows Server 2012 R2	`4489873 (IE Cumulative) 4489881 (Monthly Rollup)`	Low	Information Disclosure	Yes
Internet Explorer 11 on Windows Server 2016	`4489882 (Security Update)`	Low	Information Disclosure	Yes
Internet Explorer 11 on Windows Server 2019	`4489899 (Security Update)`	Low	Information Disclosure	Yes
Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2	`4489873 (IE Cumulative) 4489880 (Monthly Rollup)`	Low	Information Disclosure	Yes
Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2	`4489873 (IE Cumulative) 4489880 (Monthly Rollup)`	Low	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems	`4489872 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems	`4489872 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems	`4489882 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems	`4489882 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems	`4489871 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems	`4489871 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems	`4489886 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems	`4489886 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems	`4489886 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems	`4489868 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems	`4489868 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems	`4489868 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems	`4489899 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems	`4489899 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems	`4489899 (Security Update)`	Important	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows Server 2016	`4489882 (Security Update)`	Low	Information Disclosure	Yes
Microsoft Edge (EdgeHTML-based) on Windows Server 2019	`4489899 (Security Update)`	Low	Information Disclosure	Yes

Patches

12 patches

Article	Type	Restart
`Release Notes`	Security Update	Maybe
`4489891 (Monthly Rollup) 4489873`	Monthly Rollup	Yes
`4489872`	Security Update	Yes
`4489882`	Security Update	Yes
`4489871`	Security Update	Yes
`4489886`	Security Update	Yes
`4489868`	Security Update	Yes
`4489899`	Security Update	Yes
`4489873 (IE Cumulative) 4489878`	IE Cumulative	Yes
`4489873 (IE Cumulative) 4489881`	IE Cumulative	Yes
`4489881`	Monthly Rollup	Yes
`4489873 (IE Cumulative) 4489880`	IE Cumulative	Yes

Known Exploits

No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.

Acknowledgments

bo13oy of Qihoo 360 Vulcan Team, Trend Micro's Zero Day Initiative

References

MSRC Advisory MITRE NVD