CVE-2026-45490: CWE-285: Improper Authorization in Microsoft .NET 10.0
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-45490) in Microsoft .NET 10.0 is classified under CWE-285 (Improper Authorization) and CWE-266. It allows an attacker with some level of authorization on the local system to escalate their privileges, potentially gaining higher access rights than intended. The CVSS 3.1 vector indicates local attack vector with low attack complexity, requiring privileges but no user interaction, and results in high confidentiality, integrity, and availability impacts. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate their privileges, potentially gaining full control or higher access on the affected system. This can lead to unauthorized access to sensitive data, modification of system resources, and disruption of services.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch for .NET 10.0 as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490 to remediate this vulnerability.
CVE-2026-45490: CWE-285: Improper Authorization in Microsoft .NET 10.0
Description
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-45490) in Microsoft .NET 10.0 is classified under CWE-285 (Improper Authorization) and CWE-266. It allows an attacker with some level of authorization on the local system to escalate their privileges, potentially gaining higher access rights than intended. The CVSS 3.1 vector indicates local attack vector with low attack complexity, requiring privileges but no user interaction, and results in high confidentiality, integrity, and availability impacts. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate their privileges, potentially gaining full control or higher access on the affected system. This can lead to unauthorized access to sensitive data, modification of system resources, and disruption of services.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch for .NET 10.0 as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-12T16:07:22.618Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490","vendor":"Microsoft"}]
Threat ID: 6a284cdf8dd33fbd85664d9a
Added to database: 06/09/2026, 17:26:55 UTC
Last enriched: 07/29/2026, 21:57:37 UTC
Last updated: 07/31/2026, 19:30:14 UTC
Views: 70
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