Remote Code Execution Vulnerability in Windows Telephony Service
CVE-2025-21417

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Vendor
CVE Published:
14 January 2025

What is CVE-2025-21417?

The Windows Telephony Service includes a critical vulnerability that allows an attacker to execute arbitrary code on affected systems. By exploiting this vulnerability, a malicious actor could potentially gain elevated privileges and perform unauthorized actions, thus compromising the security and integrity of the affected systems. Users of Windows 10, Windows 11, Windows Server 2019, and Windows Server 2022 should ensure their systems are updated to mitigate the risks associated with this vulnerability.

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Affected Version(s)

Windows 10 Version 1507 32-bit Systems 10.0.10240.0 < 10.0.10240.20890

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.7699

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.6775

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

EPSS Score

6% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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