CVE-2025-21302: 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-2025-21302) involves a heap-based buffer overflow in the Windows Telephony Service on Windows 10 Version 1507. It can be exploited remotely without privileges but requires user interaction. Successful exploitation could allow an attacker to execute arbitrary code with system-level impact. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
The vulnerability allows remote code execution, potentially leading to full compromise of the affected system's confidentiality, integrity, and availability. The CVSS score of 8.8 (high severity) reflects the critical nature of this flaw. No known exploits in the wild have been reported at the time of publication.
Mitigation Recommendations
An official fix from Microsoft is available and should be applied promptly. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21302 for the patch and update instructions.
CVE-2025-21302: 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-2025-21302) involves a heap-based buffer overflow in the Windows Telephony Service on Windows 10 Version 1507. It can be exploited remotely without privileges but requires user interaction. Successful exploitation could allow an attacker to execute arbitrary code with system-level impact. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
The vulnerability allows remote code execution, potentially leading to full compromise of the affected system's confidentiality, integrity, and availability. The CVSS score of 8.8 (high severity) reflects the critical nature of this flaw. No known exploits in the wild have been reported at the time of publication.
Mitigation Recommendations
An official fix from Microsoft is available and should be applied promptly. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21302 for the patch and update instructions.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.951Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21302","vendor":"Microsoft"}]
Threat ID: 68c0bd509ed239a66badeb7c
Added to database: 09/09/2025, 23:50:40 UTC
Last enriched: 06/10/2026, 09:51:48 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 97
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