CVE-2025-21250: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1507
Windows Telephony Service Remote Code Execution Vulnerability
AI Analysis
Technical Summary
This vulnerability (CVE-2025-21250) involves a heap-based buffer overflow in the Windows Telephony Service on Windows 10 Version 1507 (build 10.0.10240.0). It can be exploited remotely over the network without privileges but requires user interaction. Successful exploitation could lead to remote code execution with full confidentiality, integrity, and availability impact. Microsoft has published an official fix to address this issue.
Potential Impact
Exploitation of this vulnerability could allow an unauthenticated remote attacker to execute arbitrary code on the affected system, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. The vulnerability requires user interaction but no privileges, making it a significant risk for affected systems.
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-2025-21250 to remediate this vulnerability.
CVE-2025-21250: 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
This vulnerability (CVE-2025-21250) involves a heap-based buffer overflow in the Windows Telephony Service on Windows 10 Version 1507 (build 10.0.10240.0). It can be exploited remotely over the network without privileges but requires user interaction. Successful exploitation could lead to remote code execution with full confidentiality, integrity, and availability impact. Microsoft has published an official fix to address this issue.
Potential Impact
Exploitation of this vulnerability could allow an unauthenticated remote attacker to execute arbitrary code on the affected system, potentially leading to full system compromise including confidentiality, integrity, and availability impacts. The vulnerability requires user interaction but no privileges, making it a significant risk for affected systems.
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-2025-21250 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.927Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21250","vendor":"Microsoft"}]
Threat ID: 68c0c0d09ed239a66badfcfb
Added to database: 09/10/2025, 00:05:36 UTC
Last enriched: 06/10/2026, 09:46:18 UTC
Last updated: 07/07/2026, 10:33:19 UTC
Views: 217
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