Mashaba’s side will face the 2002 Afcon champions in their return leg clash at Moses Mabhida Stadium on Tuesday, with hopes of a win in order to keep their qualification bid alive.
Bafana are scrambling for points as they have only collected two out of a possible nine points on offer thus far, with nine points still to play for.
Following their 2-2 draw in Limbe on Saturday, Mashaba says Cameroon are not guaranteed to win all their remaining group games.
"I can say they will still lose one or two games, and they will not have walk in the park,” says ‘Shakes’.
The 65-year-old tactician, however, feels South Africa are capable of collecting maximum points with three games to go and still stand a chance qualifying for the biennial showpiece in Gabon next year.
“We are looking at trying to win the last three games and then we have a big chance of going through," he adds.
"But we need to make sure we consolidate once we score – that is very critical.
“If you look at the equalizer [Cameroon’s second goal], it was a set piece. We need to avoid such things when are at a stage like that!”
The ex-Swaziland coach believes Hugo Broos’ side will come to play for a point on Tuesday evening, especially after what they saw in their previous encounter.
"I think after this 2-2 draw and after what they have seen from us they will still want to come here and consolidate and look for another draw,” adds Mashaba.
"I'm definitely sure they won't go all out because they are in good stead with seven points now.
“If they get another draw then they are almost 80 percent to qualifying.
“So what we need to try and do is to throw the game at them and see how they respond.”
Tickets for the clash n Durban are still available at R80 through Computicket, with kick-off time scheduled for 19h00.