The (1) eqn2graph and (2) pic2graph scripts in groff 1.18.1 allow local users to overwrite arbitrary files via a symlink attack on temporary files.

The groffer script in the Groff package 1.18 and later versions, as used in Trustix Secure Linux 1.5 through 2.1, and possibly other operating systems, allows local users to overwrite files via a symlink attack on temporary files.

Buffer overflow in the preprocessor in groff 1.16 and earlier allows remote attackers to gain privileges via lpd in the LPRng printing system.

Format string vulnerability in pic utility in groff 1.16.1 and other versions, and jgroff before 1.15, allows remote attackers to bypass the -S option and execute arbitrary commands via format string specifiers in the plot command.

GNU Groff uses the current working directory to find a device description file, which allows a local user to gain additional privileges by including a malicious postpro directive in the description file, which is executed when another user runs groff.