CVE-2026-62743: CWE-125: Out-of-bounds Read in Microsoft Windows 10 Version 1607
Out-of-bounds read in Windows Win32K allows an authorized attacker to disclose information locally.
AI Analysis
Technical Summary
CVE-2026-62743 is a vulnerability classified as CWE-125 (Out-of-bounds Read) affecting the Windows Win32K subsystem in Microsoft Windows 10 Version 1607 (build 10.0.14393.0). The flaw permits an authorized attacker with local access to read memory outside the intended bounds, potentially disclosing sensitive information. The vulnerability does not require user interaction and has a low attack complexity. Microsoft has released an official fix to remediate this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to read memory beyond allocated bounds in the Win32K component, leading to information disclosure. There is no impact on integrity or availability. The confidentiality impact is rated high by CVSS, but the overall severity is medium due to the requirement for local privileges.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62743 to remediate this vulnerability.
CVE-2026-62743: CWE-125: Out-of-bounds Read in Microsoft Windows 10 Version 1607
Description
Out-of-bounds read in Windows Win32K allows an authorized attacker to disclose information locally.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-62743 is a vulnerability classified as CWE-125 (Out-of-bounds Read) affecting the Windows Win32K subsystem in Microsoft Windows 10 Version 1607 (build 10.0.14393.0). The flaw permits an authorized attacker with local access to read memory outside the intended bounds, potentially disclosing sensitive information. The vulnerability does not require user interaction and has a low attack complexity. Microsoft has released an official fix to remediate this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to read memory beyond allocated bounds in the Win32K component, leading to information disclosure. There is no impact on integrity or availability. The confidentiality impact is rated high by CVSS, but the overall severity is medium due to the requirement for local privileges.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62743 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:01:21.823Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62743","vendor":"Microsoft"}]
Threat ID: 6a7b5811bf8831d539155b8a
Added to database: 08/11/2026, 17:12:49 UTC
Last enriched: 08/11/2026, 21:57:53 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 3
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