Buffer overflow in ftpd 5.4 in 3Com NBX 4.0.17 or ftpd 5.4.2 in 3Com NBX 4.1.4 allows remote attackers to cause a denial of service (crash) via a long CEL command.
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.