CVE-2025-21233: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1507
Windows Telephony Service Remote Code Execution Vulnerability
AI Analysis
Technical Summary
CVE-2025-21233 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 could allow an unauthenticated attacker to execute arbitrary code remotely if a user interacts with a crafted malicious input. The vulnerability has a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could result in remote code execution with full system impact, compromising confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but user interaction is necessary to trigger the vulnerability.
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-2025-21233 to remediate this vulnerability.
CVE-2025-21233: 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-2025-21233 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 could allow an unauthenticated attacker to execute arbitrary code remotely if a user interacts with a crafted malicious input. The vulnerability has a CVSS 3.1 base score of 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could result in remote code execution with full system impact, compromising confidentiality, integrity, and availability of the affected system. The attacker does not require privileges but user interaction is necessary to trigger the vulnerability.
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-2025-21233 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.921Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21233","vendor":"Microsoft"}]
Threat ID: 68c0bd4e9ed239a66badeaa2
Added to database: 09/09/2025, 23:50:38 UTC
Last enriched: 06/10/2026, 09:44:28 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 112
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