Ngamaleu was one of his country's key players when they hosted the finals two years ago but was omitted from the original squad for this tournament, which kicks off next Saturday. He also played at the 2022 World Cup finals.
He comes in at the last moment to replace uncapped teenager Regis Mughe (19), who has elected to stay with his French club Marseille rather than go with the Indomitable Lions.
Cameroon are among several countries forced to make late changes as the deadline for the submission of squads passed on Wednesday.
After losing forward Amine Gouiri (23), Algeria will now have to do without veteran goalkeeper Rais Mbolhi (37), who has also suffered an injury. He was approaching his 100th cap but is replaced by Saudi-based Mustafa Zaghba, the Algerian federation said.
Egypt have lost uncapped Ahmed Nabil Kouka (22), who had been in top form for African champions Al Ahly and was an exciting call-up, to a foot injury suffered in training. He is replaced by Mohanad Lasheen (27).
Full-back Osama Galal (26), who suffered a knee injury, was replaced on Wednesday by Yasser Ibrahim (30), whose original omission from the squad had been widely criticised by pundits in Egypt.
Tunisia have allowed Mortadha Ben Ouanes (29) to withdraw for what the federation said were family reasons and replaced the Turkish-based striker with Seifeddine Jaziri (30). Jaziri was Tunisia’s lead attacker at the last Cup of Nations finals in Cameroon two years ago.
Mauritania goalkeeper Babacar Diop (27) underwent surgery on Wednesday after rupturing his anterior cruciate ligament in his knee in training in Tunisia, where they are preparing for the tournament. A replacement has yet to be announced.
The 24 participating countries had until Wednesday to name their squads, which can be a maximum of 27 players but also have until kickoff in their first game to replace injured players, but only after producing medical evidence.
