OnlyPatch
Internet Explorer

CVE-2018-0942 — Internet Explorer Elevation of Privilege Vulnerability

Important CVSS 3 EPSS 0.03142 2018-03 archive

Executive Summary

An elevation of privilege vulnerability exists when Internet Explorer fails a check, allowing sandbox escape. An attacker who successfully exploited the vulnerability could use the sandbox escape to elevate privileges on an affected system. This vulnerability by itself does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability (such as a remote code execution vulnerability or another elevation of privilege vulnerability) that is capable of leveraging the elevated privileges when code execution is attempted. The update addresses the vulnerability by correcting how Internet Explorer handles zone and integrity settings.

Overview

3
CVSS LOW
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released Mar 13 2018
Last Updated Mar 13 2018
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.03142 — 0.86762 percentile

CVSS Vector

ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
Low
USER INTERACTION
Required
SCOPE
Changed
CONFIDENTIALITY
Low
INTEGRITY
None
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 2.7

EPSS Score

0.03142
probability of exploitation in the next 30 days
0.86762 percentile - updated 2026-08-14
View on FIRST.org

Affected Products

10 affected products
Product KB Article Severity Impact Restart Required
Internet Explorer 11 on Windows 10 for 32-bit Systems 4088786 (Security Update) Important Elevation of Privilege Yes
Internet Explorer 11 on Windows 10 for x64-based Systems 4088786 (Security Update) Important Elevation of Privilege Yes
Internet Explorer 11 on Windows 10 Version 1511 for 32-bit Systems 4088779 (Security Update) Important Elevation of Privilege Yes
Internet Explorer 11 on Windows 10 Version 1511 for x64-based Systems 4088779 (Security Update) Important Elevation of Privilege Yes
Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems 4088787 (Security Update) Important Elevation of Privilege Yes
Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems 4088787 (Security Update) Important Elevation of Privilege Yes
Internet Explorer 11 on Windows 10 Version 1703 for 32-bit Systems 4088782 (Security Update) Important Elevation of Privilege Yes
Internet Explorer 11 on Windows 10 Version 1703 for x64-based Systems 4088782 (Security Update) Important Elevation of Privilege Yes
Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1 4088875 (Monthly Rollup) 4096040 (IE Cumulative) Important Elevation of Privilege 4074598 4092946 Base: 3.0 Temporal: 2.7 Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1 4088875 (Monthly Rollup) 4096040 (IE Cumulative) Important Elevation of Privilege 4074598 4092946 Base: 3.0 Temporal: 2.7 Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 8.1 for 32-bit systems 4088876 (Monthly Rollup) 4089187 (IE Cumulative) Important Elevation of Privilege 4074594 4074736 Base: 3.0 Temporal: 2.7 Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows 8.1 for x64-based systems 4088876 (Monthly Rollup) 4089187 (IE Cumulative) Important Elevation of Privilege 4074594 4074736 Base: 3.0 Temporal: 2.7 Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows RT 8.1 4088876 (Monthly Rollup) Important Elevation of Privilege Yes
Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 4088875 (Monthly Rollup) 4096040 (IE Cumulative) Low Elevation of Privilege 4074598 4092946 Base: 2.6 Temporal: 2.4 Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows Server 2012 R2 4088876 (Monthly Rollup) 4089187 (IE Cumulative) Low Elevation of Privilege 4074594 4074736 Base: 2.6 Temporal: 2.4 Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N/E:P/RL:O/RC:C Yes None Internet Explorer 11 on Windows Server 2016 4088787 (Security Update) Low Elevation of Privilege Yes

Patches

5 patches
Article Type Restart
4088786 Security Update Yes
4088779 Security Update Yes
4088787 Security Update Yes
4088782 Security Update Yes
4088876 Monthly Rollup Yes

Known Exploits

Acknowledgments

None

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