"At no stage have we, or are we considering lessening the current sanctions in place for respective players in relation to the incident in South Africa," a spokesperson from CA told cricket.com.au.
"The CA Code of Conduct does not allow for reversal or lessening of sanctions once players have fully accepted the charges.
"The current articles published are purely speculative."
Media reports suggested that Smith and Warner could be allowed to play in the Sheffield Shield for the 2018-19 season, but CA's bans do not end until late March, with the final scheduled from March 28-April 1.
Bancroft should be available for selection for Western Australia for the final four rounds of matches, which start in late February.
The ban does not prevent the trio from playing domestic cricket overseas and Warner and Smith are currently playing in the inaugural Global T20 Canada league.
(Reporting By Arnab Paul in Bengaluru)
