CVE-2023-21548: Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability
First published: Tue Jan 10 2023(Updated: )
Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows 10 | =20H2 | |
| Microsoft Windows 10 | =1607 | |
| Microsoft Windows 8.1 for 32-bit systems | ||
| Microsoft Windows 10 | =1607 | |
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows 10 | =20H2 | |
| Microsoft Windows 8.1 for x64-based systems | ||
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 11 | =21H2 | |
| Microsoft Windows 7 | ||
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows 11 | =21H2 | |
| Microsoft Windows 7 | ||
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows 10 | =20H2 | |
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows Server 2012 x64 | ||
| Microsoft Windows Server 2012 x64 | ||
| Microsoft Windows RT | ||
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows 10 Version 1607 x86 | ||
| Microsoft Windows 10 Version 1607 x86 | ||
| Microsoft Windows 10 1809 | ||
| Microsoft Windows 10 1809 | ||
| Microsoft Windows 10 1809 | ||
| Microsoft Windows 10 20H2 | ||
| Microsoft Windows 10 20H2 | ||
| Microsoft Windows 10 20H2 | ||
| Microsoft Windows 10 21h2 | ||
| Microsoft Windows 10 21h2 | ||
| Microsoft Windows 10 21h2 | ||
| Microsoft Windows 10 22h2 | ||
| Microsoft Windows 10 22h2 | ||
| Microsoft Windows 10 22h2 | ||
| Microsoft Windows 11 21h2 | ||
| Microsoft Windows 11 21h2 | ||
| Microsoft Windows 11 22h2 | ||
| Microsoft Windows 11 22h2 | ||
| Microsoft Windows 7 | =sp1 | |
| Microsoft Windows 7 | =sp1 | |
| Microsoft Windows 8.1 | ||
| Microsoft Windows 8.1 | ||
| Microsoft Windows RT | ||
| Microsoft Windows Server 2008 Itanium | =sp2 | |
| Microsoft Windows Server 2008 Itanium | =sp2 | |
| Microsoft Windows Server 2008 Itanium | =r2-sp1 | |
| Microsoft Windows Server 2012 x64 | ||
| Microsoft Windows Server 2012 x64 | =r2 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows Server 2008 Itanium |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-21548?
CVE-2023-21548 is rated as critical due to its potential for remote code execution.
How do I fix CVE-2023-21548?
To fix CVE-2023-21548, apply the security updates provided by Microsoft for the affected Windows versions.
What versions of Windows are affected by CVE-2023-21548?
CVE-2023-21548 affects multiple versions of Windows 10, Windows 11, and Windows Server editions.
Can CVE-2023-21548 be exploited remotely?
Yes, CVE-2023-21548 can be exploited remotely, allowing unauthorized execution of code.
What mitigation steps should I take for CVE-2023-21548?
In addition to applying patches, ensure proper network segmentation and monitor for suspicious activity.
- collector/msrc-cve
- agent/type
- agent/first-publish-date
- agent/title
- agent/severity
- agent/references
- agent/description
- source/Microsoft
- agent/software-canonical-lookup
- agent/weakness
- agent/author
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/source
- agent/software-canonical-lookup-request
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- collector/nvd-api
- source/NVD
- vendor/microsoft
- canonical/microsoft windows 10
- version/microsoft windows 10/20h2
- version/microsoft windows 10/1607
- canonical/microsoft windows 8.1 for 32-bit systems
- canonical/microsoft windows server 2008 r2
- canonical/microsoft windows 8.1 for x64-based systems
- version/microsoft windows 10/1809
- version/microsoft windows 10/22h2
- version/microsoft windows 10/21h2
- canonical/microsoft windows 11
- version/microsoft windows 11/21h2
- canonical/microsoft windows 7
- version/microsoft windows 11/22h2
- canonical/microsoft windows server 2022
- canonical/microsoft windows server 2016
- canonical/microsoft windows server 2019
- canonical/microsoft windows server 2012 r2
- canonical/microsoft windows server 2012 x64
- canonical/microsoft windows rt
- canonical/microsoft windows server 2008 itanium
- canonical/microsoft windows 10 version 1607 x86
- canonical/microsoft windows 10 1809
- canonical/microsoft windows 10 20h2
- canonical/microsoft windows 10 21h2
- canonical/microsoft windows 10 22h2
- canonical/microsoft windows 11 21h2
- canonical/microsoft windows 11 22h2
- version/microsoft windows 7/sp1
- canonical/microsoft windows 8.1
- version/microsoft windows server 2008 itanium/sp2
- version/microsoft windows server 2008 itanium/r2-sp1
- version/microsoft windows server 2012 x64/r2