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Windows MSHTML Platform

CVE-2023-35628 — Windows MSHTML Platform Remote Code Execution Vulnerability

Critical CVSS 8.1 EPSS 0.92817 2023-12 archive

Executive Summary

None

Overview

8.1
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Dec 12 2023
Last Updated Dec 12 2023
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.92817 — 0.99816 percentile
NVD CVSS 8.1 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.1

EPSS Score

0.92817
probability of exploitation in the next 30 days
0.99816 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

24 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 5033379 (Security Update) Critical Remote Code Execution Yes
Windows 10 for x64-based Systems 5033379 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1607 for 32-bit Systems 5033373 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1607 for x64-based Systems 5033373 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1809 for 32-bit Systems 5033371 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1809 for ARM64-based Systems 5033371 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 1809 for x64-based Systems 5033371 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H2 for 32-bit Systems 5033372 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H2 for ARM64-based Systems 5033372 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H2 for x64-based Systems 5033372 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 22H2 for 32-bit Systems 5033372 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 22H2 for ARM64-based Systems 5033372 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 22H2 for x64-based Systems 5033372 (Security Update) Critical Remote Code Execution Yes
Windows 11 version 21H2 for ARM64-based Systems 5033369 (Security Update) Critical Remote Code Execution Yes
Windows 11 version 21H2 for x64-based Systems 5033369 (Security Update) Critical Remote Code Execution Yes
Windows 11 Version 22H2 for ARM64-based Systems 5033375 (Security Update) Critical Remote Code Execution Yes
Windows 11 Version 22H2 for x64-based Systems 5033375 (Security Update) Critical Remote Code Execution Yes
Windows 11 Version 23H2 for ARM64-based Systems 5033375 (Security Update) Critical Remote Code Execution Yes
Windows 11 Version 23H2 for x64-based Systems 5033375 (Security Update) Critical Remote Code Execution Yes
Windows Server 2008 R2 for x64-based Systems Service Pack 1 5033433 (Monthly Rollup) 5033424 (Security Only) 5033376 (IE Cumulative) Critical Remote Code Execution 5032252 5032191 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.26864 1.001 Yes 5033433 5033424 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5033433 (Monthly Rollup) 5033424 (Security Only) 5033376 (IE Cumulative) Critical Remote Code Execution 5032252 5032191 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.1.7601.26864 1.001 Yes 5033433 5033424 Windows Server 2012 5033376 (IE Cumulative) 5033429 (Monthly Rollup) Critical Remote Code Execution 5032191 5032247 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 1.001 6.2.9200.24614 Yes None Windows Server 2012 (Server Core installation) 5033376 (IE Cumulative) 5033429 (Monthly Rollup) Critical Remote Code Execution 5032191 5032247 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 1.001 6.2.9200.24614 Yes None Windows Server 2012 R2 5033420 (Monthly Rollup) 5033376 (IE Cumulative) Critical Remote Code Execution 5032249 5032191 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 6.3.9600.21715 1.002 Yes None Windows Server 2012 R2 (Server Core installation) 5033376 (IE Cumulative) 5033420 (Monthly Rollup) Critical Remote Code Execution 5032191 5032249 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 1.001 6.3.9600.21715 Yes None Windows Server 2016 5033373 (Security Update) Critical Remote Code Execution Yes
Windows Server 2016 (Server Core installation) 5033373 (Security Update) Critical Remote Code Execution Yes
Windows Server 2019 5033371 (Security Update) Critical Remote Code Execution Yes
Windows Server 2019 (Server Core installation) 5033371 (Security Update) Critical Remote Code Execution Yes
Windows Server 2022 5033118 (Security Update) 5033464 (Security Hotpatch Update) Critical Remote Code Execution 5032198 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 10.0.20348.2159 10.0.20348.2144 Yes None Windows Server 2022 (Server Core installation) 5033118 (Security Update) 5033464 (Security Hotpatch Update) Critical Remote Code Execution 5032198 Base: 8.1 Temporal: 7.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 10.0.20348.2159 10.0.20348.2144 Yes None Windows Server 2022, 23H2 Edition (Server Core installation) 5033383 (Security Update) Critical Remote Code Execution Yes

Patches

7 patches
Article Type Restart
5033379 Security Update Yes
5033373 Security Update Yes
5033371 Security Update Yes
5033372 Security Update Yes
5033369 Security Update Yes
5033375 Security Update Yes
5033383 Security Update Yes

Known Exploits

Acknowledgments

Ben Barnea

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