CVE-2025-21241: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1507
Windows Telephony Service Remote Code Execution Vulnerability
AI Analysis
Technical Summary
CVE-2025-21241 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 an unauthenticated attacker to remotely execute code on the affected system, potentially leading to full compromise (confidentiality, integrity, and availability impacts are all high). The vulnerability requires user interaction but no privileges. Microsoft has published an official security update addressing this issue.
Potential Impact
Successful exploitation of this vulnerability could allow remote code execution on affected Windows 10 Version 1507 systems, resulting in complete compromise of the system's confidentiality, integrity, and availability. The CVSS v3.1 base score is 8.8, indicating a high severity threat. There are no known exploits in the wild at the time of publication.
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-2025-21241 to remediate this vulnerability.
CVE-2025-21241: 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-2025-21241 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 an unauthenticated attacker to remotely execute code on the affected system, potentially leading to full compromise (confidentiality, integrity, and availability impacts are all high). The vulnerability requires user interaction but no privileges. Microsoft has published an official security update addressing this issue.
Potential Impact
Successful exploitation of this vulnerability could allow remote code execution on affected Windows 10 Version 1507 systems, resulting in complete compromise of the system's confidentiality, integrity, and availability. The CVSS v3.1 base score is 8.8, indicating a high severity threat. There are no known exploits in the wild at the time of publication.
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-2025-21241 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.924Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21241","vendor":"Microsoft"}]
Threat ID: 68c0bd4e9ed239a66badeabe
Added to database: 09/09/2025, 23:50:38 UTC
Last enriched: 06/10/2026, 09:45:21 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 99
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.