CVE-2026-26131: CWE-276: Incorrect Default Permissions in Microsoft .NET 10.0
Incorrect default permissions in .NET allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-276 (Incorrect Default Permissions), affects Microsoft .NET version 10.0. It allows an authorized local attacker to elevate their privileges due to improper default permission settings. The vulnerability has been assigned CVE-2026-26131 and carries a CVSS 3.1 base score of 7.8, indicating high severity. Microsoft has published an official fix for this issue, and the vendor advisory is available at the Microsoft Security Response Center.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate their privileges on the affected system. This could lead to full compromise of confidentiality, integrity, and availability of the affected system components running .NET 10.0.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26131 to remediate this vulnerability.
CVE-2026-26131: CWE-276: Incorrect Default Permissions in Microsoft .NET 10.0
Description
Incorrect default permissions in .NET allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-276 (Incorrect Default Permissions), affects Microsoft .NET version 10.0. It allows an authorized local attacker to elevate their privileges due to improper default permission settings. The vulnerability has been assigned CVE-2026-26131 and carries a CVSS 3.1 base score of 7.8, indicating high severity. Microsoft has published an official fix for this issue, and the vendor advisory is available at the Microsoft Security Response Center.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate their privileges on the affected system. This could lead to full compromise of confidentiality, integrity, and availability of the affected system components running .NET 10.0.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch from the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26131 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T16:24:51.132Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26131","vendor":"Microsoft"}]
Threat ID: 69b05632ea502d3aa87d6b59
Added to database: 03/10/2026, 17:34:42 UTC
Last enriched: 06/19/2026, 20:32:03 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 328
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