CVE-2025-21406: Windows Telephony Service Remote Code Execution Vulnerability
First published: Tue Feb 11 2025(Updated: )
Windows Telephony Service Remote Code Execution Vulnerability
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows Server 2022 23H2 | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows 11 | =23H2 | |
| Microsoft Windows 10 | =1607 | |
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows Server 2012 x64 | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2012 x64 | ||
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows 11 | =23H2 | |
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows 10 | =1607 | |
| Microsoft Windows 10 | ||
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 1507 | <10.0.10240.20915 | |
| Microsoft Windows 10 1507 | <10.0.10240.20915 | |
| Microsoft Windows 10 Version 1607 x86 | <10.0.14393.7785 | |
| Microsoft Windows 10 Version 1607 x86 | <10.0.14393.7785 | |
| Microsoft Windows 10 1809 | <10.0.17763.6893 | |
| Microsoft Windows 10 1809 | <10.0.17763.6893 | |
| Microsoft Windows 10 21h2 | <10.0.19044.5487 | |
| Microsoft Windows 10 22h2 | <10.0.19045.5487 | |
| Microsoft Windows 11 22h2 | <10.0.22621.4890 | |
| Microsoft Windows 11 23h2 | <10.0.22631.4890 | |
| Microsoft Windows 11 Home Edition | <10.0.26100.3194 | |
| 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 | <10.0.14393.7785 | |
| Microsoft Windows Server 2019 | <10.0.17763.6893 | |
| Microsoft Windows Server 2022 | <10.0.20348.3207 | |
| Microsoft Windows Server 2022 23H2 | <10.0.25398.1425 | |
| Microsoft Windows Server 2025 | <10.0.26100.3194 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-21406?
CVE-2025-21406 is classified with a severity rating that indicates a risk of remote code execution in Windows Telephony Service.
How do I fix CVE-2025-21406?
To fix CVE-2025-21406, apply the appropriate security updates or patches provided by Microsoft for your affected Windows version.
Which versions of Windows are affected by CVE-2025-21406?
CVE-2025-21406 affects multiple Windows versions including Windows 10, Windows Server 2022, Windows Server 2016, and Windows 11.
Can CVE-2025-21406 be exploited remotely?
Yes, CVE-2025-21406 can be exploited remotely, allowing attackers to execute arbitrary code on affected systems.
Is authentication required to exploit CVE-2025-21406?
Exploitation of CVE-2025-21406 does not require authentication, making it particularly risky for unpatched systems.
- collector/mitre-cve
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- agent/references
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- collector/msrc-cve
- source/Microsoft
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- agent/software-canonical-lookup
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- agent/author
- agent/source
- agent/event
- collector/msrc
- collector/nvd-api
- source/NVD
- agent/remedy
- agent/last-modified-date
- agent/tags
- agent/softwarecombine
- vendor/microsoft
- canonical/microsoft windows server 2008 itanium
- canonical/microsoft windows 10
- version/microsoft windows 10/22h2
- canonical/microsoft windows server 2016
- canonical/microsoft windows server 2012 r2
- canonical/microsoft windows 11
- version/microsoft windows 11/22h2
- canonical/microsoft windows server 2022 23h2
- canonical/microsoft windows server 2025
- canonical/microsoft windows server 2019
- version/microsoft windows 11/23h2
- version/microsoft windows 10/1607
- version/microsoft windows 11/24h2
- version/microsoft windows 10/21h2
- canonical/microsoft windows server 2012 x64
- canonical/microsoft windows server 2008 r2
- version/microsoft windows 10/1809
- canonical/microsoft windows server 2022
- canonical/microsoft windows 10 1507
- canonical/microsoft windows 10 version 1607 x86
- canonical/microsoft windows 10 1809
- canonical/microsoft windows 10 21h2
- canonical/microsoft windows 10 22h2
- canonical/microsoft windows 11 22h2
- canonical/microsoft windows 11 23h2
- canonical/microsoft windows 11 home edition
- version/microsoft windows server 2008 itanium/sp2
- version/microsoft windows server 2008 itanium/r2-sp1
- version/microsoft windows server 2012 x64/r2