CVE-2025-21241: Windows Telephony Service Remote Code Execution Vulnerability
Published Jan 14, 2025
·Updated
Windows Telephony Service Remote Code Execution Vulnerability
Affected Software
43 affected componentsFixes available
Microsoft Windows Server 2025
Microsoft Windows Server 2025
Microsoft Windows Server 2022, 23H2 Edition
Microsoft Windows Server 2019
Microsoft Windows Server 2019
Microsoft Windows 11=23H2
Microsoft Windows 11=22H2
Microsoft Windows 11=22H2
Microsoft Windows 11=24H2
Microsoft Windows 11=24H2
Microsoft Windows 11=23H2
Microsoft Windows Server 2022
Microsoft Windows Server 2022
Microsoft Windows 10 1507<10.0.10240.20890
Microsoft Windows 10 1507<10.0.10240.20890
Microsoft Windows 10 1607<10.0.14393.7699
Microsoft Windows 10 1607<10.0.14393.7699
Microsoft Windows 10 1809<10.0.17763.6775
Microsoft Windows 10 1809<10.0.17763.6775
Microsoft Windows 10 21h2<10.0.19044.5371
Microsoft Windows 10 22h2<10.0.19045.5371
Microsoft Windows 11 22h2<10.0.22621.4751
Microsoft Windows 11 23h2<10.0.22631.4751
Microsoft Windows 11 24h2<10.0.26100.2894
Microsoft Windows Server 2016<10.0.14393.7699
Microsoft Windows Server 2019<10.0.17763.6775
Microsoft Windows Server 2022<10.0.20348.3091
Microsoft Windows Server 2022 23h2<10.0.25398.1369
Microsoft Windows Server 2025<10.0.26100.2894
Microsoft Windows Server 2016
Microsoft Windows Server 2016
Microsoft Windows 10=1809
Microsoft Windows 10=1809
Microsoft Windows 10=22H2
Microsoft Windows 10=22H2
Microsoft Windows 10=22H2
Microsoft Windows 10=1607
Microsoft Windows 10=1607
Microsoft Windows 10=21H2
Microsoft Windows 10=21H2
Microsoft Windows 10=21H2
Microsoft Windows 10
Microsoft Windows 10
Remediation
Event History
Jan 14, 2025
CVE Published
via Microsoft·08:00 AM
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeakness
CVE Published
via MITRE·06:03 PM
Data Sourced
via MITRE·06:03 PM
DescriptionSeverity
Data Sourced
via NVD·06:15 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2025-21241?
CVE-2025-21241 is classified as a critical remote code execution vulnerability in the Windows Telephony Service.
2
How do I fix CVE-2025-21241?
To fix CVE-2025-21241, install the latest patches provided in the Microsoft update guide.
3
Which versions of Windows are affected by CVE-2025-21241?
CVE-2025-21241 affects multiple versions of Microsoft Windows including Windows 10, Windows 11, and Windows Server 2022.
4
What type of vulnerability is CVE-2025-21241?
CVE-2025-21241 is a remote code execution vulnerability that can allow an attacker to execute arbitrary code on the affected system.
5
Is CVE-2025-21241 being actively exploited?
There are indications that CVE-2025-21241 may be under active exploitation in the wild.