The send_the_mail function in server/svr_mail.c in Terascale Open-Source Resource and Queue Manager (aka TORQUE Resource Manager) before 4.2.6 allows remote attackers to execute arbitrary commands via shell metacharacters in the email (-M switch) to qsub.

pbs_mom in Terascale Open-Source Resource and Queue Manager (aka TORQUE Resource Manager) 2.5.x, 4.x, and earlier does not properly restrict access by unprivileged ports, which allows remote authenticated users to execute arbitrary jobs by submitting a command.

Terascale Open-Source Resource and Queue Manager (aka TORQUE Resource Manager) 3.0.1 and earlier allows remote attackers to bypass host-based authentication and submit arbitrary jobs via a modified PBS_O_HOST variable to the qsub program.

Multiple buffer overflows in Terascale Open-Source Resource and Queue Manager (aka TORQUE Resource Manager) 2.x before 2.4.14, 2.5.x before 2.5.6, and 3.x before 3.0.2 allow (1) remote authenticated users to gain privileges via a long Job_Name field in a qsub command to the server, and might allow (2) local users to gain privileges via vectors involving a long host variable in pbs_iff.