CVE-2026-58637: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58637) involves a use-after-free condition in the Windows Client-Side Caching (CSC) Service on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some level of authorization and can lead to privilege escalation. The vulnerability has been assigned a CVSS v3.1 base score of 7.0, indicating high severity. Microsoft has released an official patch to address this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected system. This could allow the attacker to gain higher-level access than intended, potentially compromising system integrity, confidentiality, and availability.
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-2026-58637 to remediate this vulnerability.
CVE-2026-58637: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Client-Side Caching (CSC) Service allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-58637) involves a use-after-free condition in the Windows Client-Side Caching (CSC) Service on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some level of authorization and can lead to privilege escalation. The vulnerability has been assigned a CVSS v3.1 base score of 7.0, indicating high severity. Microsoft has released an official patch to address this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected system. This could allow the attacker to gain higher-level access than intended, potentially compromising system integrity, confidentiality, and availability.
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-2026-58637 to remediate this vulnerability.
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-2026-58637","vendor":"Microsoft"}]
Threat ID: 6a5676c568715ace43f0b627
Added to database: 07/14/2026, 17:49:57 UTC
Last enriched: 08/13/2026, 16:12:46 UTC
Last updated: 08/26/2026, 11:03:42 UTC
Views: 106
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