Vulnerability: BAT_SPYBOT.A (aka BAT.MUMU.A.WORM)

Systems affected: Windows 2000, Windows XP and Windows NT4.

Problem defined: The BAT_SPYBOT.A worm performs a brute-force password guessing attack by which it attempts to gain access to administrator privileges on workstations running Windows 2000, Windows XP and Windows NT4 and spread itself throughout the network. The worm significantly slows network connectivity.

The most vulnerable systems are those on which trivial or no passwords are in use.

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