CVE-2023-21805: Windows MSHTML Platform Remote Code Execution Vulnerability

Published Feb 14, 2023
·
Updated

Windows MSHTML Platform Remote Code Execution Vulnerability

Affected Software

51 affected componentsFixes available
Microsoft Windows 10=20H2
Patch available
Microsoft Windows 10<10.0.10240.19747
Microsoft Windows 10 1607<10.0.14393.5717
Microsoft Windows 10 1809<10.0.17763.4010
Microsoft Windows 10 20h2<10.0.19042.2604
Microsoft Windows 10 21h2<10.0.19044.2604
Microsoft Windows 10 22h2<10.0.19045.2604
Microsoft Windows 11 21h2<10.0.22000.1574
Microsoft Windows 11 22h2<10.0.22621.1265
Microsoft Windows Server 2008=sp2
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows Server 2008<6.0.6003.21915, <1.1.0.0
6.0.6003.219151.1.0.0
Microsoft Windows Server 2012 R2<6.3.9600.20821, <6.3.9600.20818
6.3.9600.208216.3.9600.20818
Microsoft Windows 10=1607
10.0.14393.5717
Microsoft Windows Server 2012<6.2.9200.24116, <1.1.0.0
6.2.9200.241161.1.0.0
Microsoft Windows Server 2008 R2<6.1.7601.26366, <1.1.0.0
6.1.7601.263661.1.0.0
Microsoft Windows Server 2008<6.0.6003.21915, <1.1.0.0
6.0.6003.219151.1.0.0
Microsoft Windows Server 2008<6.0.6003.21915, <1.1.0.0
6.0.6003.219151.1.0.0
Microsoft Windows Server 2008<6.0.6003.21915, <1.1.0.0
6.0.6003.219151.1.0.0
Microsoft Windows Server 2012 R2<6.3.9600.20821, <6.3.9600.20818
6.3.9600.208216.3.9600.20818
Microsoft Windows Server 2008 R2<6.1.7601.26366, <1.1.0.0
6.1.7601.263661.1.0.0
Microsoft Windows Server 2016<10.0.14393.5717
10.0.14393.5717
Microsoft Windows 10<10.0.10240.19747
10.0.10240.19747
Microsoft Windows 10<10.0.10240.19747
10.0.10240.19747
Microsoft Windows 10=22H2
10.0.19045.2604
Microsoft Windows 10=22H2
10.0.19045.2604
Microsoft Windows Server 2012<6.2.9200.24116, <1.1.0.0
6.2.9200.241161.1.0.0
Microsoft Windows 11=22H2
10.0.22621.1265
Microsoft Windows 10=1607
10.0.14393.5717
Microsoft Windows 11=21H2
10.0.22621.1574
Microsoft Windows 10=21H2
10.0.19044.2604
Microsoft Windows 10=21H2
10.0.19044.2604
Microsoft Windows 10=21H2
10.0.19044.2604
Microsoft Windows 10=20H2
10.0.19042.2604
Microsoft Windows 11=21H2
10.0.22621.1574
Microsoft Windows Server 2022<10.0.20348.1547, <10.0.20348.1540
10.0.20348.154710.0.20348.1540
Microsoft Windows 10=20H2
10.0.19042.2604
Microsoft Windows Server 2019<10.0.17763.4010
10.0.17763.4010
Microsoft Windows Server 2016<10.0.14393.5717
10.0.14393.5717
Microsoft Windows 10=22H2
10.0.19045.2604
Microsoft Windows Server 2019<10.0.17763.4010
10.0.17763.4010
Microsoft Windows 11=22H2
10.0.22621.1265
Microsoft Windows 10=1809
10.0.17763.4010
Microsoft Windows 10=1809
10.0.17763.4010
Microsoft Windows 10=1809
10.0.17763.4010
Microsoft Windows Server 2022<10.0.20348.1547, <10.0.20348.1540
10.0.20348.154710.0.20348.1540

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.0.6003.21915Fixed in 1.1.0.0Patch KB5022835
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.3.9600.20821Fixed in 6.3.9600.20818Patch KB5022835
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.14393.5717Patch KB5022838
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.2.9200.24116Fixed in 1.1.0.0Patch KB5022835
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.1.7601.26366Fixed in 1.1.0.0Patch KB5022835
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.10240.19747Patch KB5022858
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.22621.1265Patch KB5022845
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19045.2604Patch KB5022834
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19044.2604Patch KB5022834
  10. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.22621.1574Patch KB5022836
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19042.2604Patch KB5022834
  12. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.20348.1547Fixed in 10.0.20348.1540Patch KB5022921
  13. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17763.4010Patch KB5022840

Event History

Feb 14, 2023
CVE Published
via Microsoft·08:00 AM
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·08:00 AM
Affected Software
Updated
via Microsoft·08:00 AM
Description
CVE Published
via MITRE·07:33 PM
Data Sourced
via MITRE·07:33 PM
DescriptionSeverity
Data Sourced
via NVD·08:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2023-21805?

CVE-2023-21805 has been assigned a critical severity rating due to its potential for remote code execution.

2

How do I fix CVE-2023-21805?

To fix CVE-2023-21805, apply the latest security patches provided by Microsoft for your affected Windows version.

3

Which systems are affected by CVE-2023-21805?

CVE-2023-21805 affects multiple Microsoft Windows operating systems including Windows Server 2008, 2012, 2016, 2019, and 2022, as well as Windows 10 and 11.

4

What happens if CVE-2023-21805 is exploited?

If exploited, CVE-2023-21805 could allow an attacker to execute arbitrary code on the affected system, leading to full system compromise.

5

Is there a workaround for CVE-2023-21805?

Currently, implementing security updates is the primary recommendation, as there are no officially documented workarounds for CVE-2023-21805.

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