Security Issue: How secure is sending confidential credentials via wpa_cli type interface?

[George S. Lockwood]

Security Issue: How secure is sending confidential credentials via wpa_cli
type interface?

the passwork  and psk are examples of very confidential credential data that
could be exposed in transmission from a wpa_cli (or gui) interface
(CTRL-RSP-PASSWORD-#-password).

Is this a real exposure?

How is the transmission secured?  How could it be intercepted?

george
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