Description
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
Published: 2026-06-09
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

Improper authorization in the .NET SDK enables an attacker with local authorization to elevate privileges. The vulnerability is classified as CWE-285 and CWE-266 and allows a user to acquire higher rights on the same machine, potentially compromising confidentiality and integrity of the system.

Affected Systems

The vulnerability affects Microsoft .NET 10.0, Microsoft .NET 8.0, and Microsoft .NET 9.0. No specific sub‑release or patch level is specified in the data available.

Risk and Exploitability

The CVSS score of 7.8 denotes a high severity risk. The EPSS score is <1%, indicating a low but non-zero exploitation probability of about 0.00055. The vulnerability is not listed in CISA’s KEV catalog. It is likely that the attacker must already have local legitimate access and then exploit the improper authorization to gain elevated privileges; this attack vector is inferred from the description.

Generated by OpenCVE AI on June 11, 2026 at 02:20 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update Microsoft .NET SDK to the latest version containing the security fix as soon as it becomes available.
  • Restrict installation and use of the .NET SDK to authenticated administrators only, limiting exposure to trusted users.
  • Enable audit logging for privilege‑escalation attempts involving .NET components and review logs regularly for suspicious activity.

Generated by OpenCVE AI on June 11, 2026 at 02:20 UTC.

Tracking

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Advisories

No advisories yet.

History

Thu, 11 Jun 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-266
References
Metrics threat_severity

None

 threat_severity

Important

Wed, 10 Jun 2026 11:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Tue, 09 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
Description Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
Title .NET SDK Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft .net
Weaknesses CWE-285
CPEs cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft .net
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Subscriptions

Microsoft .net
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-06-30T12:10:20.578Z

Reserved: 2026-05-12T16:07:22.618Z

Link: CVE-2026-45490

cve-icon Vulnrichment

Updated: 2026-06-30T03:17:25.514Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-09T17:17:25.447

Modified: 2026-06-09T19:32:51.440

Link: CVE-2026-45490

cve-icon Redhat

Severity : Important

Publid Date: 2026-06-09T17:04:43Z

Links: CVE-2026-45490 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-11T02:30:02Z

Weaknesses
  • CWE-266

    Incorrect Privilege Assignment

  • CWE-285

    Improper Authorization