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VulnerabilitiesApr 27, 2026

Unpatched 'PhantomRPC' Flaw in Windows Enables Privilege Escalation

Unpatched PhantomRPC flaw in Windows RPC enables privilege escalation via five exploit paths.

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Summary

A researcher has identified an architectural weakness in Windows' Remote Procedure Call (RPC) mechanism that allows privilege escalation through connections to unavailable services. The vulnerability, termed 'PhantomRPC,' presents five distinct exploit paths and remains unpatched. This flaw could allow attackers to elevate privileges on affected Windows systems.

Entities

Windows (product)Remote Procedure Call (RPC) (technology)