The Australian skipper has claimed 309 Test scalps in 71 appearances with an impressive average.
The Australian chief selector George Bailey has confirmed that skipper Cummins will play a "major part" in the upcoming historic rivalry.
Speculation had been growing that the 32-year-old might be unavailable due to a ongoing back issue that was still troubling him.
Earlier indications from the squad suggested no final decision had been made regarding his involvement, with the extended contest scheduled to begin on 21 November in Western Australia.
He revealed that Cummins is "building up" and remained hopeful about the likelihood of being involved.
"We know that time is getting short and multiple considerations at play, aside from the physical problem, but additional elements," Bailey remarked.
"It's positive. There's strong faith that he will feature a key capacity. Hopefully starting in Perth. If not, we'll reassess."
Previous Setbacks
He was sidelined Australia's limited-overs series against India and New Zealand last month after examinations confirmed a lumbar bone stress.
Previous incidents include of recurring issues, with flare-ups in 2012-13, 2013-14 and 2015-16 leading to absences from several home seasons in a short span.
He emphasized he would be ""aggressive" and "take risks" in his rehabilitation process to secure his spot for the series.
The selector indicated that there was no confirmation if the captain had resumed bowling as part of his comeback but conceded it was "pressing" for him to regain fitness for the initial match.
Contingency Plans
If he's unavailable, former captain Steve Smith will lead the side.
All-rounder Cameron Green was withdrawn recently from the ODI lineup for their ODI contests against the Asian giants as a preventive step because of discomfort in his torso.
Bailey described it as a "slight concern and confirmed that he'll feature in the Sheffield Shield, so will be "ideally positioned to resume bowling."
"Extensive planning has gone into developing the strategy for him to be available for the opening match as an all-rounder," the selector detailed.
"He was only going to play the starting games regardless. His aggressive style the bat in limited-overs, should it hinder progress for a short period, the choice was made to adopt a safer strategy."
Fixture Details
Australia vs England: The Ashes
Spanning from late 2025 to early 2026
