CVE-2026-54772: CoreWCF: Pre-authentication infinite-loop CPU exhaustion in CoreWCF net.tcp / net.pipe / net.uds framing handshake

June 19, 2026

An unauthenticated remote attacker can pin one server thread‑pool worker at 100 % CPU per connection. With a few connections, the CPU usage can be exhausted.

References

github.com/CoreWCF/CoreWCF/security/advisories/GHSA-p86g-xrr2-pf7c
github.com/advisories/GHSA-p86g-xrr2-pf7c
nvd.nist.gov/vuln/detail/CVE-2026-54772

Code Behaviors & Features

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