Security Advisory

CVE-2026-54777

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-08 22:01:21

Last updated 2026-07-10 03:55:40

Assigner GitHub_M

CVSS score 6.5

State PUBLISHED

Description

CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF NetNamedPipe transport accepts attachment to a pre-existing named pipe instance, allowing local interception of NetNamedPipe traffic when an attacker races NamedPipeListener startup between shared memory GUID publication and service named pipe creation. This issue is fixed in versions 1.8.1 and 1.9.1.

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