Unspecified vulnerability in (1) SYS$EI1000.EXE and (2) SYS$EI1000_MON.EXE in HP OpenVMS 8.3 and earlier allows remote attackers to cause a denial of service (machine crash) via an βoversizeβ packet, which is not properly discarded if βthe device has no remaining buffers after receipt of the first buffer segment.β