CVE-1999-0040 — CVSS 7.2 (high): Buffer overflow in Xt library of X Windowing System allows local users to execute commands with root privileges.
CVE-1999-0138 — CVSS 7.2 (high): The suidperl and sperl program do not give up root privileges when changing UIDs back to the original users, allowing root access.
CVE-1999-0078 — CVSS 1.9 (low): pcnfsd (aka rpc.pcnfsd) allows local users to change file permissions, or execute arbitrary commands through arguments in the RPC call.