Status survey of the cave scorpion, Chaerilus chubluk Lourenço,Tran & Pham, 2020 was carried out in a volcanic cave, in Krong No district, DakNong province in 2022 and 2023. A total of 43 individuals were recorded, amongwhich 25 individuals in 2022 and 18 individuals in 2023. This species is onlyknown from Co cave which is now strongly threatened by human impact. Based onthe current area of occupancy (AOO) and the extent of occurrence (EOO) of C. chubluk,associated with its recent regression in both AOO and number of individuals, thisspecies is tentatively classified as critically endangered by IUCN. The researchresults are presented for the first time, as scientific data for the conservation of thisscorpion and integrated into the IUCN database.Status survey of the cave scorpion, Chaerilus chubluk Lourenço,Tran & Pham, 2020 was carried out in a volcanic cave, in Krong No district, DakNong province in 2022 and 2023. A total of 43 individuals were recorded, amongwhich 25 individuals in 2022 and 18 individuals in 2023. This species is onlyknown from Co cave which is now strongly threatened by human impact. Based onthe current area of occupancy (AOO) and the extent of occurrence (EOO) of C. chubluk,associated with its recent regression in both AOO and number of individuals, thisspecies is tentatively classified as critically endangered by IUCN. The researchresults are presented for the first time, as scientific data for the conservation of thisscorpion and integrated into the IUCN database.