The pace bowler has claimed 309 Test scalps in 71 five-day games with an average of 22.10.
Australia's chair of selectors George Bailey has stated that skipper Cummins will play a "major part" in the forthcoming historic rivalry.
There were concerns that Cummins might be unavailable due to a stress fracture in his back that was still troubling him.
Earlier indications from team management suggested no definitive call had been made regarding Cummins' participation, with the Test matches set to start on November 21 in Perth.
The selector shared that his recovery is on track and remained hopeful about the likelihood of participating.
"It's clear that the window is narrowing and various factors around that, not only the physical problem, but further aspects," the selector added.
"We're encouraged. We firmly believe that he will feature a significant role. Ideally it's the first Test. Otherwise, we'll adjust."
Injury History
Cummins was ruled out the ODI and T20 games against both Asian and Trans-Tasman rivals recently after medical tests showed a lumbar bone stress.
There is a track record of spinal problems, with flare-ups in multiple past seasons leading to absences from multiple domestic campaigns in four years.
Cummins stated he would be ""aggressive" and "take risks" in his recovery plan to make the squad for the series.
The selector indicated that it was unclear if the captain had resumed bowling as part of his comeback but admitted it was "getting tight" for him to recover fully for the first Test.
Contingency Plans
In case of absence, ex-skipper Smith will lead the side.
All-rounder Cameron Green was withdrawn recently from the ODI lineup for their ODI contests against India as a safety move because of soreness in his side.
The selector characterized it as a "slight concern and mentioned that he'll feature in the state-level matches, so will be "ideally positioned to deliver overs."
"Extensive planning has gone into developing the strategy for him to take part for the first Test as an batting and bowling option," the selector detailed.
"He was only going to play the starting games regardless. How he handles the cricket bat in white-ball cricket, if it causes any delay for another day, the choice was made to take a cautious route."
Fixture Details
The Ashes: Australia v England
Spanning from late 2025 to early 2026
