CVE-2026-40410: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows SMB Client allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-40410) involves a use-after-free condition in the Windows SMB Client component on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local authorization and can lead to privilege escalation. The CVSS 3.1 vector indicates that the attack requires local access with high attack complexity and low privileges, but no user interaction. The impact includes high confidentiality, integrity, and availability impacts. Microsoft has released an official fix for this vulnerability.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could allow the attacker to gain higher-level access than intended, potentially compromising system confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
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 this issue. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40410 for detailed patch information and deployment instructions.
CVE-2026-40410: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows SMB Client allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-40410) involves a use-after-free condition in the Windows SMB Client component on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local authorization and can lead to privilege escalation. The CVSS 3.1 vector indicates that the attack requires local access with high attack complexity and low privileges, but no user interaction. The impact includes high confidentiality, integrity, and availability impacts. Microsoft has released an official fix for this vulnerability.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could allow the attacker to gain higher-level access than intended, potentially compromising system confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
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 this issue. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40410 for detailed patch information and deployment instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-13T00:27:50.798Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40410","vendor":"Microsoft"}]
Threat ID: 6a036557cbff5d861008c9c7
Added to database: 5/12/2026, 5:37:27 PM
Last enriched: 5/12/2026, 6:23:29 PM
Last updated: 5/13/2026, 4:48:16 AM
Views: 2
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