Researchers Detail Windows UAC Bypass Techniques and Limits of Administrator Protection

Security researchers published multiple technical demonstrations showing how Windows User Account Control (UAC) can still be bypassed through complex elevation paths, including a method described by James Forshaw and a later public proof of concept, SspiUacBypass, that uses SSPI Datagram Contexts to obtain elevated execution. The GitHub project exposes C++ research code for the technique and links it to broader work on abusing Windows elevation mechanisms, underscoring that UAC bypass tradecraft remains publicly documented and reproducible for attackers as well as defenders.

A separate review of Microsoft’s upcoming Windows 11 Administrator Protection feature says the redesign reduces exposure to common split-token and COM auto-elevation abuse by introducing per-user "Shadow Admin" accounts, but does not fully eliminate legacy elevation weaknesses. The analysis says some bypass avenues and risky behaviors still persist, including issues tied to LocalAccountTokenFilterPolicy, RunOnce auto-elevation behavior, and certain UIAccess interactions, leaving enterprises with a transitional model where newer protections coexist with older high-integrity token paths.