CVE-2026-58540: CWE-285: Improper Authorization in Microsoft Windows 10 Version 1607
Improper authorization in Windows Installer allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-58540) involves improper authorization in the Windows Installer on Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local authorized access can exploit this flaw to elevate their privileges on the affected system. The vulnerability is classified under CWE-285 (Improper Authorization). Microsoft has published an official fix addressing this issue.
Potential Impact
Successful exploitation allows a locally authorized attacker to gain elevated privileges, potentially leading to full system compromise. The CVSS score of 7.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Users and administrators should apply the update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58540 to mitigate the risk. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-58540: CWE-285: Improper Authorization in Microsoft Windows 10 Version 1607
Description
Improper authorization in Windows Installer 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 (CVE-2026-58540) involves improper authorization in the Windows Installer on Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local authorized access can exploit this flaw to elevate their privileges on the affected system. The vulnerability is classified under CWE-285 (Improper Authorization). Microsoft has published an official fix addressing this issue.
Potential Impact
Successful exploitation allows a locally authorized attacker to gain elevated privileges, potentially leading to full system compromise. The CVSS score of 7.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Users and administrators should apply the update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58540 to mitigate the risk. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-01T04:33:41.870Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58540","vendor":"Microsoft"}]
Threat ID: 6a5676c268715ace43f0b186
Added to database: 07/14/2026, 17:49:54 UTC
Last enriched: 07/14/2026, 18:06:14 UTC
Last updated: 07/14/2026, 20:03:48 UTC
Views: 2
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