Stack-based buffer overflow in lib/snmpagent.c in bsnmpd, as used in FreeBSD 8.3 through 10.0, allows remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via a crafted GETBULK PDU request.
FreeBSD Security Advisory - The bsnmpd(8) daemon is prone to a stack-based buffer-overflow when it has received a specifically crafted GETBULK PDU request.