CVE-2026-55001: CWE-295: Improper Certificate Validation in Microsoft Windows 10 Version 1607
Improper certificate validation in Windows Active Directory allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2026-55001 and classified under CWE-295 (Improper Certificate Validation), affects Windows 10 Version 1607 (build 10.0.14393.0). It arises from improper validation of certificates within Windows Active Directory, enabling an attacker with existing local privileges to escalate their privileges further. The CVSS v3.1 base score is 7.8, indicating high severity, with impacts including high confidentiality, integrity, and availability consequences. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized attacker with local access can exploit this vulnerability to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This can lead to full system compromise, affecting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55001 to remediate the issue.
CVE-2026-55001: CWE-295: Improper Certificate Validation in Microsoft Windows 10 Version 1607
Description
Improper certificate validation in Windows Active Directory allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2026-55001 and classified under CWE-295 (Improper Certificate Validation), affects Windows 10 Version 1607 (build 10.0.14393.0). It arises from improper validation of certificates within Windows Active Directory, enabling an attacker with existing local privileges to escalate their privileges further. The CVSS v3.1 base score is 7.8, indicating high severity, with impacts including high confidentiality, integrity, and availability consequences. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized attacker with local access can exploit this vulnerability to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This can lead to full system compromise, affecting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55001 to remediate the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-16T14:10:05.869Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55001","vendor":"Microsoft"}]
Threat ID: 6a566f7e68715ace43e6bc31
Added to database: 07/14/2026, 17:18:54 UTC
Last enriched: 08/13/2026, 15:26:45 UTC
Last updated: 08/27/2026, 22:52:12 UTC
Views: 81
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