CVE-2026-35433

.NET Elevation of Privilege Vulnerability

Published May 12, 2026 CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
Description
Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8x9c-mqxv-q2pp Microsoft Security Advisory CVE-2026-35433 – .NET Elevation of Privilege Vulnerability
History
Type Values Removed Values Added
Description Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally. Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.
Type Values Removed Values Added
Description Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally. Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
Type Values Removed Values Added
Description Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally. Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.
Type Values Removed Values Added
Description Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally. Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.
Title .NET Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft .net
Weaknesses CWE-190
CWE-20
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C'}