CVE-2026-20843: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1607
Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability in Windows 10 Version 1607's RRAS component arises from improper access control, enabling an attacker with local authorization to escalate privileges. The CVSS 3.1 vector indicates the attack requires local access with low complexity and no user interaction, and successful exploitation results in high impact on confidentiality, integrity, and availability. The vendor has released a patch to remediate this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to gain elevated privileges, potentially allowing full control over the affected system. This could lead to unauthorized disclosure, modification, or destruction of data and disruption of system availability.
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 as soon as possible to mitigate the risk. No additional vendor advisories indicate alternative mitigations or that no action is required.
CVE-2026-20843: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1607
Description
Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Windows 10 Version 1607's RRAS component arises from improper access control, enabling an attacker with local authorization to escalate privileges. The CVSS 3.1 vector indicates the attack requires local access with low complexity and no user interaction, and successful exploitation results in high impact on confidentiality, integrity, and availability. The vendor has released a patch to remediate this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to gain elevated privileges, potentially allowing full control over the affected system. This could lead to unauthorized disclosure, modification, or destruction of data and disruption of system availability.
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 as soon as possible to mitigate the risk. No additional vendor advisories indicate alternative mitigations or that no action is required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.376Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668adea60475309f9ae0a0
Added to database: 1/13/2026, 6:11:42 PM
Last enriched: 4/3/2026, 12:44:58 PM
Last updated: 5/7/2026, 5:39:28 PM
Views: 95
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