CVE-2026-58632: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability is a use-after-free (CWE-416) in the Windows Win32K subsystem of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It enables an authorized attacker with local access to elevate their privileges, potentially leading to full system compromise. The vulnerability has been assigned CVE-2026-58632 and carries a CVSS v3.1 score of 7.8, indicating high severity. Microsoft has released an official patch to remediate this issue, as documented in their security update guide.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could allow the attacker to execute code with higher privileges, potentially compromising system integrity, confidentiality, and availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate the issue. No additional mitigation steps are required beyond applying the official patch.
CVE-2026-58632: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a use-after-free (CWE-416) in the Windows Win32K subsystem of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). It enables an authorized attacker with local access to elevate their privileges, potentially leading to full system compromise. The vulnerability has been assigned CVE-2026-58632 and carries a CVSS v3.1 score of 7.8, indicating high severity. Microsoft has released an official patch to remediate this issue, as documented in their security update guide.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could allow the attacker to execute code with higher privileges, potentially compromising system integrity, confidentiality, and availability.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate the issue. No additional mitigation steps are required beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T21:14:44.617Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58632","vendor":"Microsoft"}]
Threat ID: 6a5676c468715ace43f0b2ed
Added to database: 07/14/2026, 17:49:56 UTC
Last enriched: 08/13/2026, 16:11:22 UTC
Last updated: 08/26/2026, 22:52:11 UTC
Views: 65
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