TPP is an ncurses-based text presentation tool.
TPP templates may contain a --exec clause, the contents of which are automatically executed without confirmation from the user.
A remote attacker could entice a user to open a specially crafted file using TPP, possibly resulting in execution of arbitrary code with the privileges of the user.
There is no known workaround at this time.
All TPP users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-office/tpp-1.3.1-r2"