CVE-2026-62703: CWE-125: Out-of-bounds Read in Microsoft Windows 10 Version 1809
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability (CWE-125) involves an out-of-bounds read in the Windows Desktop Window Manager (DWM) Core Library on Windows 10 Version 1809 (build 10.0.17763.0). An authorized attacker with local privileges can exploit this flaw to read sensitive information from memory, potentially leading to information disclosure. The issue does not affect integrity or availability but impacts confidentiality. Microsoft has released an official fix to address this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to read memory outside of the intended boundaries, resulting in the disclosure of sensitive information. There is no impact on system integrity or availability. The vulnerability is rated medium severity with a CVSS 3.1 score of 5.5.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the provided security updates for Windows 10 Version 1809 (build 10.0.17763.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62703 to remediate this issue.
CVE-2026-62703: CWE-125: Out-of-bounds Read in Microsoft Windows 10 Version 1809
Description
Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.
CVSS v3.1
Score 5.5medium
Affected software
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-125) involves an out-of-bounds read in the Windows Desktop Window Manager (DWM) Core Library on Windows 10 Version 1809 (build 10.0.17763.0). An authorized attacker with local privileges can exploit this flaw to read sensitive information from memory, potentially leading to information disclosure. The issue does not affect integrity or availability but impacts confidentiality. Microsoft has released an official fix to address this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to read memory outside of the intended boundaries, resulting in the disclosure of sensitive information. There is no impact on system integrity or availability. The vulnerability is rated medium severity with a CVSS 3.1 score of 5.5.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the provided security updates for Windows 10 Version 1809 (build 10.0.17763.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62703 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T20:56:21.891Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62703","vendor":"Microsoft"}]
Threat ID: 6a7b580abf8831d539155a14
Added to database: 08/11/2026, 17:12:42 UTC
Last enriched: 08/11/2026, 22:27:40 UTC
Last updated: 09/24/2026, 01:47:43 UTC
Views: 21
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