Stack-based buffer overflow in nsum.exe in the Windows Media Unicast Service in Media Services for Microsoft Windows 2000 Server SP4 allows remote attackers to execute arbitrary code via crafted packets associated with transport information, aka "Media Services Stack-based Buffer Overflow Vulnerability."
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.