CVE-2026-83968: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-83968) involves a use-after-free condition in the Windows Biometric Service on Microsoft Windows 10 Version 1607 and later builds. Exploitation requires local authorized access and can result in privilege escalation. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix addressing this issue. No known exploits are reported in the wild at this time.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges on affected Windows 10 systems. This could allow the attacker to gain higher-level access than intended, potentially compromising system security and control. The vulnerability affects confidentiality, integrity, and availability with high impact.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the security updates provided by Microsoft for the affected Windows 10 versions to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-01T01:02:23.994Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83968","vendor":"Microsoft"}]
Threat ID: 6aa04577acd9273b49fbded8
Added to database: 09/08/2026, 17:27:19 UTC
Last enriched: 10/14/2026, 22:11:47 UTC
Last updated: 10/23/2026, 15:10:15 UTC
Views: 35
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