CVE-2026-20852: CWE-266: Incorrect Privilege Assignment in Microsoft Windows 10 Version 1607
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2026-20852, is classified under CWE-266 (Incorrect Privilege Assignment) and affects Windows 10 Version 1607 (build 10.0.14393.0). It specifically involves Windows Hello, where improper privilege assignment enables unauthorized local attackers to tamper with the system. The CVSS 3.1 vector indicates the attack requires local access with low attack complexity and no privileges or user interaction, resulting in high confidentiality and integrity impacts. The vendor has released a patch to remediate this issue.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to perform tampering actions on the affected system, potentially compromising sensitive data or system integrity. There is no impact on system availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A patch is available from Microsoft to fix this vulnerability. It is recommended to apply the official update for Windows 10 Version 1607 promptly to mitigate the risk. Since this is not a cloud service, remediation depends on applying the vendor's patch. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-20852: CWE-266: Incorrect Privilege Assignment in Microsoft Windows 10 Version 1607
Description
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2026-20852, is classified under CWE-266 (Incorrect Privilege Assignment) and affects Windows 10 Version 1607 (build 10.0.14393.0). It specifically involves Windows Hello, where improper privilege assignment enables unauthorized local attackers to tamper with the system. The CVSS 3.1 vector indicates the attack requires local access with low attack complexity and no privileges or user interaction, resulting in high confidentiality and integrity impacts. The vendor has released a patch to remediate this issue.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to perform tampering actions on the affected system, potentially compromising sensitive data or system integrity. There is no impact on system availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
A patch is available from Microsoft to fix this vulnerability. It is recommended to apply the official update for Windows 10 Version 1607 promptly to mitigate the risk. Since this is not a cloud service, remediation depends on applying the vendor's patch. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.377Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae0a60475309f9ae0f7
Added to database: 1/13/2026, 6:11:44 PM
Last enriched: 4/3/2026, 12:45:38 PM
Last updated: 5/10/2026, 12:58:13 PM
Views: 92
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