CVE-2026-45490

.NET SDK Elevation of Privilege Vulnerability

State: Published
Severity: 7.8 High
Published: Jun 9, 2026
Updated: Sep 24, 2026
Reserved: May 12, 2026

Description

Improper authorization in .NET allows an authorized attacker to elevate privileges locally.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	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	microsoft
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	redhat-SADP

Weaknesses

CWE-285 Improper Authorization
CWE-266 Incorrect Privilege Assignment

Affected Products

Product	Versions
.NET 10.0Microsoft	10.0.0 to before 10.0.9Affected
.NET 8.0Microsoft	8.0.0 to before 8.0.28Affected
.NET 9.0Microsoft	9.0.0 to before 9.0.17Affected

References

.NET SDK Elevation of Privilege Vulnerabilityvendor-advisorypatch
https://access.redhat.com/security/cve/CVE-2026-45490vdb-entry
RHBZ#2487184issue-tracking
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45490.json

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