The pace bowler has claimed 309 wickets in 71 Test matches with an average of 22.10.
The Australian chief selector George Bailey has confirmed that skipper Cummins will play a "major part" in the upcoming Ashes series.
Rumors had circulated that the veteran bowler might be unavailable due to a persistent back stress problem that had not yet healed.
Initial reports from team management suggested no final decision had been made regarding whether he would play, with the five-Test series set to start on 21 November in Western Australia.
Bailey expressed that Cummins is "building up" and felt positive about the likelihood of being involved.
"We're aware that the clock is ticking and various factors involved, not only the physical problem, but additional elements," the selector added.
"It's positive. There's strong faith that he's going to play a significant role. Ideally starting in Perth. Otherwise, then we'll pick it up."
Previous Setbacks
The captain missed Australia's limited-overs series against India and New Zealand last month after examinations confirmed a lower back issue.
He has a history of back injuries, with recurrences in several earlier campaigns forcing him out of several home seasons in four years.
Cummins stated he would be ""aggressive" and "take risks" in his recovery plan to ensure his availability for the series.
He mentioned that he did not know if he had started his bowling workouts as part of his rehabilitation but conceded it was "becoming urgent" for him to be fit for the opener.
Contingency Plans
Should Cummins not be fit, former captain Steve Smith will lead the side.
All-rounder Cameron Green was recently pulled out from Australia's squad for their ODI contests against the Asian giants as a precautionary measure because of an abdominal issue.
The selector characterized it as a "small issue and confirmed that he'll feature in the state-level matches, so will be "in a good place to resume bowling."
"We put so much time has gone into developing the strategy for him to participate for the initial game as an batting and bowling option," he elaborated.
"He was only going to play the first two ODIs regardless. The way he swings the willow in shorter formats, if it causes any delay for a short period, we opted to take a cautious route."
Match Calendar
The Ashes: Australia v England
Spanning from late 2025 to early 2026