CVE-2025-21407: 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 2022 23H2 | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2019 | ||
| Windows 11 | =23H2 | |
| Windows 11 | =22H2 | |
| Windows 11 | =22H2 | |
| Windows 11 | =24H2 | |
| Windows 11 | =24H2 | |
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows 10 | <10.0.10240.20915 | |
| Microsoft Windows 10 | <10.0.10240.20915 | |
| Microsoft Windows 10 | <10.0.14393.7785 | |
| Microsoft Windows 10 | <10.0.14393.7785 | |
| Microsoft Windows 10 | <10.0.17763.6893 | |
| Microsoft Windows 10 | <10.0.17763.6893 | |
| Microsoft Windows 10 | <10.0.19044.5487 | |
| Microsoft Windows 10 | <10.0.19045.5487 | |
| Windows 11 | <10.0.22621.4890 | |
| Windows 11 | <10.0.22631.4890 | |
| Windows 11 | <10.0.26100.3194 | |
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =sp2 | |
| Microsoft Windows Server | =r2-sp1 | |
| Microsoft Windows Server | ||
| Microsoft Windows Server | =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 | <10.0.25398.1425 | |
| Microsoft Windows Server 2025 | <10.0.26100.3194 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2016 | ||
| Windows 10 | =1809 | |
| Windows 10 | =1809 | |
| Windows 10 | =22H2 | |
| Windows 10 | =22H2 | |
| Windows 10 | =22H2 | |
| Windows 10 | =1607 | |
| Windows 10 | =1607 | |
| Windows 10 | =21H2 | |
| Windows 10 | =21H2 | |
| Windows 10 | =21H2 | |
| Windows 10 | ||
| Windows 10 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-21407?
CVE-2025-21407 has been rated as a high-severity vulnerability due to its potential for remote code execution.
How do I fix CVE-2025-21407?
To fix CVE-2025-21407, apply the appropriate security patches listed in Microsoft's update guide.
What systems are affected by CVE-2025-21407?
CVE-2025-21407 affects various versions of Microsoft Windows including Windows 10, Windows Server 2016, and Windows Server 2022.
Can CVE-2025-21407 be exploited remotely?
Yes, CVE-2025-21407 can be exploited remotely, allowing attackers to execute arbitrary code on affected systems.
Is there a workaround for CVE-2025-21407?
While the best defense against CVE-2025-21407 is to install the patches, limiting network exposure may reduce the risk of exploitation.
- agent/references
- agent/title
- agent/type
- collector/msrc-cve
- source/Microsoft
- agent/software-canonical-lookup
- agent/description
- agent/first-publish-date
- agent/severity
- agent/weakness
- agent/author
- agent/source
- collector/msrc
- agent/remedy
- agent/event
- agent/software-canonical-lookup-request
- collector/nvd-api
- source/NVD
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/softwarecombine
- vendor/microsoft
- canonical/microsoft windows server 2022 23h2
- canonical/microsoft windows server 2025
- canonical/microsoft windows server 2008 r2
- canonical/microsoft windows server 2012 r2
- canonical/microsoft windows server
- canonical/microsoft windows server 2019
- canonical/windows 11
- version/windows 11/23h2
- version/windows 11/22h2
- version/windows 11/24h2
- canonical/microsoft windows server 2022
- canonical/microsoft windows 10
- version/microsoft windows server/sp2
- version/microsoft windows server/r2-sp1
- version/microsoft windows server/r2
- canonical/microsoft windows server 2016
- canonical/windows 10
- version/windows 10/1809
- version/windows 10/22h2
- version/windows 10/1607
- version/windows 10/21h2