The Australian skipper has secured over 300 dismissals in 71 appearances with an impressive average.
Australia's chief selector George Bailey has declared that skipper Cummins will play a "major part" in this winter's historic rivalry.
There were concerns that Cummins might miss the series due to a stress fracture in his back that remained unresolved.
Earlier indications from the Australian camp suggested no definitive call had been made regarding whether he would play, with the extended contest kicking off on the 21st of November in Perth.
He revealed that Cummins is "building up" and remained hopeful about the prospects of participating.
"It's clear that the window is narrowing and various factors at play, aside from the physical problem, but further aspects," Bailey remarked.
"It's positive. [We are] really confident that he's going to play a key capacity. Ideally starting in Perth. Otherwise, then we'll pick it up."
Previous Setbacks
He was sidelined Australia's limited-overs series against New Zealand and India last month after medical tests showed a lower back issue.
There is a track record of back injuries, with setbacks in 2012-13, 2013-14 and 2015-16 forcing him out of multiple domestic campaigns in a short span.
He emphasized he would be bold in recovery efforts in his rehabilitation process to secure his spot for the contest.
Bailey noted that there was no confirmation if Cummins had begun bowling as part of his recovery but acknowledged it was "pressing" for him to be fit for the first Test.
Alternative Arrangements
If he's unavailable, former captain Steve Smith will take over the captaincy.
The talented all-rounder was withdrawn recently from the ODI lineup for their limited-overs matches against the subcontinent side as a precautionary measure because of soreness in his side.
The selector characterized it as a "small issue and stated that he'll feature in the Sheffield Shield, so will be "well-prepared to deliver overs."
"Extensive planning has gone into building out the plan for him to participate for the initial game as an all-rounder," Bailey explained.
"His involvement was limited to the starting games anyway. His aggressive style the cricket bat in white-ball cricket, if it causes any delay for a short period, we opted to take a cautious route."
Fixture Details
The Ashes: Australia v England
21 November 2025 - 7 January 2026
