CVE-2026-54121: CWE-285: Improper Authorization in Microsoft Windows 10 Version 1607
Improper authorization in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2026-54121, is caused by improper authorization checks in Active Directory Certificate Services on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with some level of authorization to elevate their privileges remotely over the network. The CVSS v3.1 base score is 8.8, indicating high severity with high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this issue.
Potential Impact
Successful exploitation allows an attacker with existing limited privileges to elevate their privileges significantly over the network, potentially gaining full control over the affected system. This impacts confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Apply the official security update provided by Microsoft for Windows 10 Version 1607 to remediate this vulnerability. No additional mitigation steps are required beyond installing the official fix.
CVE-2026-54121: CWE-285: Improper Authorization in Microsoft Windows 10 Version 1607
Description
Improper authorization in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2026-54121, is caused by improper authorization checks in Active Directory Certificate Services on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with some level of authorization to elevate their privileges remotely over the network. The CVSS v3.1 base score is 8.8, indicating high severity with high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this issue.
Potential Impact
Successful exploitation allows an attacker with existing limited privileges to elevate their privileges significantly over the network, potentially gaining full control over the affected system. This impacts confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Apply the official security update provided by Microsoft for Windows 10 Version 1607 to remediate this vulnerability. No additional mitigation steps are required beyond installing the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-11T20:33:37.836Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54121","vendor":"Microsoft"}]
Threat ID: 6a5676ad68715ace43f097cd
Added to database: 07/14/2026, 17:49:33 UTC
Last enriched: 08/13/2026, 15:21:52 UTC
Last updated: 08/26/2026, 11:03:42 UTC
Views: 188
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