CVE-2025-21256: CWE-125: Out-of-bounds Read in Microsoft Windows 10 Version 1507
Windows Digital Media Elevation of Privilege Vulnerability
AI Analysis
Technical Summary
This vulnerability (CVE-2025-21256) involves an out-of-bounds read (CWE-125) in the Windows Digital Media component of Microsoft Windows 10 Version 1507 (build 10.0.10240.0). It allows an attacker with limited privileges to elevate their privileges on the affected system. The vulnerability has been assigned a CVSS 3.1 base score of 6.6, reflecting medium severity with high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker with low privileges to gain elevated privileges on the affected Windows 10 Version 1507 system, potentially leading to full control over the system. The vulnerability impacts confidentiality, integrity, and availability of the system.
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-2025-21256 to remediate this vulnerability.
CVE-2025-21256: CWE-125: Out-of-bounds Read in Microsoft Windows 10 Version 1507
Description
Windows Digital Media Elevation of Privilege Vulnerability
CVSS v3.1
Score 6.6medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2025-21256) involves an out-of-bounds read (CWE-125) in the Windows Digital Media component of Microsoft Windows 10 Version 1507 (build 10.0.10240.0). It allows an attacker with limited privileges to elevate their privileges on the affected system. The vulnerability has been assigned a CVSS 3.1 base score of 6.6, reflecting medium severity with high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker with low privileges to gain elevated privileges on the affected Windows 10 Version 1507 system, potentially leading to full control over the system. The vulnerability impacts confidentiality, integrity, and availability of the system.
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-2025-21256 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-10T23:54:12.933Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21256","vendor":"Microsoft"}]
Threat ID: 68c0bd4e9ed239a66badead9
Added to database: 09/09/2025, 23:50:38 UTC
Last enriched: 06/10/2026, 09:46:45 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 89
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