The 30-year-old nodded home a rebound in the 35th minute after Kim Jin-Su's strike was parried by Indomitable Lions keeper Andre Onana.
The Central African nation, who fell 2-0 to Uzbekistan on Friday, have now suffered two defeats in their final warm-ups prior to naming their World Cup squad.
Coach Rigobert Song named a strong side against the Asians in the South Korean capital, but Nicolas Moumi Ngamaleu's ambitious long-range effort was just wide midway through the first half.
Cameroon, who fielded Brentford's Bryan Mbeumo throughout, had missed chances through Olivier Ntcham, Martin Hongla, and Pierre Kunde, while Léandre Tawamba saw his stoppage-time effort saved.
The five-time African champions, who begin their World Cup campaign against Switzerland and are also grouped with Brazil and Serbia in Group G at the finals, will host Jamaica in a friendly in Yaounde on 9 November before leaving for Qatar, according to Song.
In another early kick-off, African champions Senegal drew 1-1 with fellow World Cup-bound Iran in Austria.
Senegal took the lead after 55 minutes when defender Morteza Pouraliganji struck into his own net from an acute angle.
The Teranga Lions, who beat Bolivia 2-0 on Saturday, held onto their lead for only nine minutes before Sardar Azmoun equalised, the Iran forward heading home from a cross by left back Ehsan Hajsafi.
Aliou Cisse's men will play Netherlands in their opening fixture in Qatar, followed by clashes with the hosts and Ecuador in Group A.
Later on Tuesday, Morocco were held to a goalless draw by Paraguay while Ghana beat Nicaragua 1-0, thanks to a goal from teenager Abdul Fatawu Issahaku, as both sides continue their World Cup preparations.
Elsewhere, Tunisia - Africa's fifth representative at the finals - were beaten 5-1 by world champions Brazil in a game marred by racism against South American forward Richarlison.
In other results involving sides not heading to Qatar, Egypt defeated Liberia 3-0, Algeria beat Nigeria 2-1 and the next Africa Cup of Nations hosts, Ivory Coast were too good for Guinea, winning 3-1.
-- Courtesy of BBC Sport