CVE-2026-45490highCWE-266CWE-285

CVE-2026-45490: high-severity vulnerability in Microsoft .NET 10.0

.NET SDK Elevation of Privilege Vulnerability

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.4%
exploitation probability
0.4%top 65% of all CVEs
observed exploitation
nono source reports it
Improper authorization in .NET allows an authorized attacker to elevate privileges locally.
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
Affected products
Microsoft · .NET 10.0Microsoft · .NET 8.0Microsoft · .NET 9.0
Related CVEs — Microsoft .NET 10.0

In the same product, most dangerous first.

CVE-2023-36049HIGH.NET, .NET Framework, and Visual Studio Elevation of Privilege VulnerabilityEPSS 12.5%CVE-2026-50649HIGH.NET Remote Code Execution VulnerabilityEPSS 4.0%CVE-2026-50646HIGH.NET Framework Remote Code Execution VulnerabilityEPSS 4.0%CVE-2024-43498CRITICAL.NET and Visual Studio Remote Code Execution VulnerabilityEPSS 3.6%CVE-2024-21392HIGH.NET and Visual Studio Denial of Service VulnerabilityEPSS 3.1%CVE-2024-43485HIGH.NET and Visual Studio Denial of Service VulnerabilityEPSS 3.1%
References
https://access.redhat.com/security/cve/CVE-2026-45490https://bugzilla.redhat.com/show_bug.cgi?id=2487184https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45490.json