Cameroon, warming up for their eighth World Cup finals appearance, took a 48th minute lead through Eric Maxim Choupo-Moting (33), who had come on as a substitute at the start of the second half.
However, they were only able to stay in the lead for seven minutes before Michael Murillo (26) equalised at Abu Dhabi's Mohammed Bin Zayed Stadium.
Cameroon coach Rigobert Song fielded a full strength side for their only warm-up game before they meet Switzerland in their opening Group G game in Al Wakrah next Thursday.