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Fix CVE-2026-26131 - HIGH microsoft .net | CVEDatabase.com

Home MicrosoftCVE-2026-26131

High

7.8CVSS

CVE-2026-26131

Vendor:Microsoft

Published: 10 Mar 2026

Updated 3w ago

Generated remediation guidance and an executive summary. No account required.

Description

Incorrect default permissions in .NET allows an authorized attacker to elevate privileges locally.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-276 · Incorrect Default Permissions

Metadata

Primary Vendor: MICROSOFT
Published: 3/10/2026
Last Modified: 4/1/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

microsoft : .net

Remediation Guidance

Executive Summary

View on NIST NVD

Related reading

Use CWE-276, Microsoft vendor hub and .Net product page to widen CVE-2026-26131 into its surrounding weakness, vendor, and product context.

Compare it with CVE-2025-21176, CVE-2025-26646 and CVE-2026-25667 for nearby disclosures in the same product family. Additional editorial context is available in The Weekly Cybersecurity Brief: March 15th, 2026 and Weekly Security Roundup: Navigating the April 2026 Threat Landscape and Critical Framework Exploits.