The Netrw plugin (netrw.vim) in Vim 7.0 and 7.1 allows user-assisted attackers to execute arbitrary commands via shell metacharacters in a filename used by the (1) "D" (delete) command or (2) b:netrw_curdir variable, as demonstrated using the netrw.v4 and netrw.v5 test cases.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11247
http://www.redhat.com/support/errata/RHSA-2008-0580.html
http://www.rdancer.org/vulnerablevim-netrw.v2.html
http://www.openwall.com/lists/oss-security/2008/10/20/2
http://secunia.com/advisories/34418
http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00004.html