Type Confusion in Microsoft products - CVE-2026-57108
Published: July 17, 2026
Vulnerability identifier: #VU138139
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-57108
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
.NET for Linux
.NET for macOS
.NET
.NET for Linux
.NET for macOS
.NET
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to type confusion in .NET Core when handling network requests. A remote attacker can send crafted network input to cause a denial of service.
How to mitigate CVE-2026-57108
Install security update from vendor's website.