rpc.pcnfsd suffers from a syslog related format string vulnerability. IBM AIX versions 6.1.0 and below, IRIX 6.5 and HP-UX versions 11.11, 11.23 and 11.31 are all affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/89795/rpcpcnfsd-format.txt
Source: https://packetstormsecurity.com/files/89795/rpc.pcnfsd-Syslog-Format-String.html