CVE-2025-21417: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1507
Windows Telephony Service Remote Code Execution Vulnerability
AI Analysis
Technical Summary
CVE-2025-21417 is a heap-based buffer overflow vulnerability (CWE-122) in the Windows Telephony Service component of Microsoft Windows 10 Version 1507 (build 10.0.10240.0). The flaw allows remote attackers to execute arbitrary code on affected systems when a user interacts with a specially crafted request. The vulnerability has a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow remote code execution, enabling an attacker to gain control over the affected system with high impact on confidentiality, integrity, and availability. The attack vector is network-based with no privileges required but requires user interaction. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21417 to remediate this vulnerability.
CVE-2025-21417: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1507
Description
Windows Telephony Service Remote Code Execution Vulnerability
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-21417 is a heap-based buffer overflow vulnerability (CWE-122) in the Windows Telephony Service component of Microsoft Windows 10 Version 1507 (build 10.0.10240.0). The flaw allows remote attackers to execute arbitrary code on affected systems when a user interacts with a specially crafted request. The vulnerability has a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow remote code execution, enabling an attacker to gain control over the affected system with high impact on confidentiality, integrity, and availability. The attack vector is network-based with no privileges required but requires user interaction. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21417 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-11T00:29:48.377Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21417","vendor":"Microsoft"}]
Threat ID: 68c0c0d09ed239a66badfd23
Added to database: 09/10/2025, 00:05:36 UTC
Last enriched: 06/10/2026, 10:02:11 UTC
Last updated: 07/07/2026, 10:33:19 UTC
Views: 290
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