There is no specific CAM-MIB, but you should be able to obtain the entire CAM-table from a switch by looking at the following values:
Vlan details:# vlan table from the CISCO-STACK MIB
#"vlanIndex" "1.3.6.1.4.1.9.5.1.9.2.1.1"
CAM Table Info:# CAM table from the BRIDGE MIB (RFC 1493)
#"dot1dTpFdbPort" "1.3.6.1.2.1.17.4.3.1.2"
Bridge -> ifIndex mapping:# Bridge port to ifIndex table from the BRIDGE MIB (RFC 1493)
#"dot1dBasePortIfIndex" "1.3.6.1.2.1.17.1.4.1.2"
Interface Name relative to the previous mapping:# ifName from the ifXTable from the IF MIB
#"ifName" "1.3.6.1.2.1.31.1.1.1.1"