CVE 2008-4101
Vim 3.0 through 7.x before 7.2.010 does not properly escape characters, which allows user-assisted attackers to (1) execute arbitrary shell commands by entering a K keystroke on a line that contains a ";" (semicolon) followed by a command, or execute arbitrary Ex commands by entering an argument after a (2) "Ctrl-]" (control close-square-
See the 
CVE page on Mitre.org
for more details.
